Note: This story was dynamically reformatted for online reading convenience. ï>¿Tantric Yoga by the_laughing_man Two friends try out an exciting take on yoga. "Aw, c'mon! It'll be fun! I promise!" Hannah pleaded with her roommate, desperate to have her come with. "I dunno, it sounds weird. I mean, 'Tantric Yoga'? That sounds like a sex thing. I've heard of 'Goat Yoga' before, but never this." "Erika, pleeaaaase? I really want to try it out. You don't even have to do it if you don't want! You could just watch!" Hannah begged, trying to do her best puppy eyes back at her friend. Erika could feel the look even though she couldn't see it. "Ugh, fine!" replying from behind her book, "But if it's some weird sex thing, I'm leaving!" She closed her paperback copy of Dracula, setting it down on the floor and sitting upright on the couch. "How's your little island going?" Erika asked, watching Hannah continuing to play Animal Crossing on their TV. "Great! I just designed a new flag!" Hannah exclaimed, bringing up the flag on screen. She looked back at her friend with pride but Erika just rolled her eyes. "You're such a dork," Erika said with a laugh. "Hey, at least I'm not a goth!" Hannah retorted, sticking her tongue out. The two girls had met in college and almost instantly connected due to their interest is sub-cultures. They weren't into the "cool" things, whatever those were. They may have been best friends, but that didn't mean that their interests were 100% aligned. Hannah, with her video games, anime, and K-dramas; Erika, with her books, metal music, and internet forums. Erika knew Hannah was only teasing her and calling her that because she knew it bugged her. "Hey, I thought you wanted me to come! But if you're gonna call me names..." Erika threatened, but her smile gave away she was only playing. "I'm sorry, I'm sorry! You know I don't mean it!" Hannah played along. She shut off the Switch and hopped up from the floor. Hannah gathered up her yoga mat and started to put on her pink tennis shoes. Erika threw on her favorite zip-up hoodie from the closet, tossing out her long dark hair from inside of it after putting it on. She stuffed her feet into her skate shoes and her hands into her hoodie pockets. Hannah was busy putting her strawberry-blonde hair into a pony tail. She had already been lounging around in yoga pants and a Pokemon t-shirt and was ready to go. "I see your ensemble is black, as usual," Hannah said, rolling her eyes at Erika. "You know, you might get more boys if you wore some COLORS for once!" "Oh, shut up! It's not like you've gotten any for a while," Erika retorted. "Fair point," admitted Hannah. With that, the two headed out of their apartment, locking the door behind them. It was a short walk to the yoga studio, about eight blocks. They continued to tease each other about boys and their outfits. Sharing some laughter in the midday sun. "Surprised a vampire like you doesn't burst into flames out here," Hannah teased. It's true that Erika was quite pale, but Hannah wasn't doing much better in that department. "You're almost as white as I am!" Erika noted, credulity in her voice. "Oh! Hey! What do you want to do for your birthday? It's coming up sooooon!" she asked her friend. "What are you turning again, thirty-four?" again she teased, sticking out her tongue. "Uh, excuse me! You know damn well that I'm turning TWENTY-four, not THIRTY-four!" Hannah balked. Erika burst out laughing. "I was thinking of going out for sushi. What do you think?" Hannah pondered. "Hey man, it's your birthday; we can do whatever you want. Is this it?" Erika asked as they approached the office building numbered 2600. "Yup, this is it. Huh...Not exactly what I was expecting, but, whatever," Hannah remarked, pulling open the glass door. The two entered and looked at the directory on the wall. "There it is, 'Yoga Studio' - 507. Guess it's up to the fifth floor then." The pair of friends rode the elevator and eventually found the door to the studio. It was pretty nondescript and there weren't any windows into the room. Hannah shrugged at Erika as she pulled open the door. "Yup! This is it!" Hannah proudly remarked to her friend. The room wasn't very big; the far wall was a wall of windows, sunlight shining in from outside. The entryway was behind a little half-wall that ushered guests over to some cubbies. Beyond the half wall the rest of the floor was made up thin mats. There were already a few other patrons here, milling about, putting their shoes into the cubbies, rolling out their mats. Overall, there were five girls and three guys, including Hannah, Erika, and the female instructor. The instructor sat cross legged in front of the windows, smiling out at everyone. "Ah, welcome, welcome! Namaste!" she called out to Erika and Hannah as they entered. "Please, come in!" she motioned for them to join. Erika whispered under her breath to Hannah, "I think I'm gonna stay right here. You go have fun." Hannah nodded and remove her shoes, putting them into a cubby. She bounded over to a free spot as expected of someone with such a bubbly personality. Hannah was excited, nervous, thrilled. She was always wanting to try new things and when she read about this on the Internet, she had to try it. "Is your friend going to join us?" the instructor asked Hannah as she settled in. Hannah looked back at Erika and then the instructor, "Nah, she's just gonna watch." "Ah, I see. Alright then," the instructor replied with a smile, "Not a problem." It was clear that one of the guy-girl pairs were a couple with how close they had rolled out their mats to each other and the way they were talking. The instructor glided past Erika and locked the door to the room. "Wouldn't want anyone disturbing our auras," she noted to Erika who was wondering what she was doing. "Of course not," Erika replied with a smile. Once the instructor had moved out of earshot, Erika muttered to herself in a sarcastic tone, "Wouldn't want to mess with the feng-shui or chakras either." Erika had never thought much of any of this hippie, woo-woo crap. It was all just a bunch of weirdos trying to replace organized religion with something else. "Whatever, it's not doing me any harm," she thought to herself. She was trying to be better about being more open minded and accepting. "Let's begin, shall we?" the instructor asked the class, once again sitting in the front of the room. Nods all around the room. Erika leaned forward against the half-wall and watched. The students were situated in two rows of three. Hannah was in the back row in the middle. The couple was off to the left, sitting closer to the front. One guy was in front of Hannah, another beside her, and finally the other girl was sitting to the right in the front row. "Perhaps he's single," Hannah thought to herself, checking out the guy in front of her. "He's pretty good looking. Fit." Hannah thought to herself as the instructor talked them through some breathing exercises. "Who am I kidding. He'd never be interested in someone like me," Hannah thought to herself, a small frown forming on her face. Hannah wasn't exactly the most fit person, but she certainly wasn't obese. She was 5'6", 170 lbs; maybe a tad overweight, but otherwise pretty average. She wasn't as thin as Erika, that was for sure. Erika was 5'3" and weighed only about 125 lbs. Hannah was always jealous of how great Erika's figure looked. On the other hand, Erika was always remarking how she wished she had Hannah's boobs. Since Hannah was more on the "plump" side, her breasts were a nice, hefty C-cup, leaning more towards D. Erica on the other hand was an A-cup, quite flat. The instructor led the class through some basic stretches. "It's important to be limber," she informed the students. "Wouldn't want anyone getting injured!" The class stretched for a few more minutes, Erika watching from behind. "Alright, I think we're all limbered up!" the instructor noted after a few more minutes of stretching. "Now, if everyone could find a partner," she instructed. The couple obviously chose each other. The guy to Hannah's right walked up to the mat of the girl in front of him. Hannah and the guy in front of her looked at each other and smiled. "I guess that means we're partners," he remarked, laughing a bit at the awkwardness of the situation. "I guess so!" Hannah said, laughing in turn. "My name's Alex," he stated, holding out his hand to shake. "Hannah." "Nice to meet you, Hannah," Alex said with a smile. "Likewise," she said, practically beaming. "Score! I get this hunk as my partner!" she thought to herself. She was practically wiggling with excitement. "Now, if each of the pairs of partners would go to a mat," the instructor spoke, "We'll go ahead and get started." "Get started?" Erika asked to herself, "I thought we already started..." "Oh! And there's a bowl of condoms over there in one of the cubbies," the instructor motioned to the small wooden boxes along the wall. "Condoms!? I knew it! This is a weird sex thing!" Erika thought to herself. She hadn't actually expected it to be, she was more just joking - but it looks like it was actually going to be some weird sex thing. She recounted the instructor locking the door. "That makes more sense now," she thought. She had threatened to leave, but, something was compelling her to stay. This was just too weird and interesting now. Alex and the guy from the non-couple pair both approached the bowl, each taking a condom. Alex returned to Hannah's mat, laughing again at just how awkward this all was. Hannah blushed and chuckled too. "Alright, now if the women could lay down, flat on their backs," the instructor spoke. The women all did as such, Hannah watching Alex, wondering what he was going to do. "And now if the gentlemen would please remove your partner's shirt." Alex smiled at Hannah reassuringly who lifted her arms to help assist. Alex gripped the bottom hem of her light green Pokemon t-shirt and pulled it off over her head. He folded it and set it down neatly on the floor beside him. "Her bra too - it's alright if the ladies help out with this one," the instructor continued with a slight laugh. Hannah leaned up and unhooked it herself and removed her teal bra, letting her large breasts loose. She tossed it onto her shirt. Her and Alex again shared an awkward laugh. "Just easier," Hannah noted to Alex who replied in turn with a nod. "Hey, no arguments here." Hannah lay back down on her mat, her hefty breasts spilling towards her sides as she lay flat. Alex looked down at the half-naked girl in front of him. "She's cute," he thought to himself, admiring her soft, pale skin. Hannah blushed lightly as she was examined, her heart beating fast in her chest. Her areolae were large, but fairly light; her nipples, a healthy pink and already a bit hard. Alex looked towards her legs. He noted that he could see line outline of her panties through her tight, form-fitting, purple yoga pants. He swallowed, knowing that was probably coming next. "Next, her pants, please," the instructor asked. Alex put his fingers under the elastic of Hannah's yoga pants, being sure to not grab her underwear too. Hannah lifted her hips up off the ground allowing him to start pulling them down. He tugged them down her thighs, and she lifted her legs up in the air so he could more easily remove them. As Alex pulled them off, he was treated to a view of Hannah's cute underwear: pale yellow panties with little white stars all over them. She lifted her legs up together, a mound of yellow cotton peeking out from between her thighs concealing her plump pussy lips. Alex carefully pulled her pants over her adorable socks. They were pastel green with little fox faces on them. He folded her yoga pants and set them onto her pile of clothes. "Figures she'd be wearing some kind of cute underwear like that. Just like those socks." Erika thought to herself as he watched the stranger undress her friend. "She's always wearing cute little things more suited for a girl half her age." "And finally, please remove her underwear." Hannah again lifted her hips off her mat. Alex hooked his fingers under the elastic of Hannah's panties and started to pull them down. As they slid down her thighs, they revealed her trimmed bush. It was darker than her hair and trimmed to about 1 cm long. Again she lifted her legs so Alex could finish removing her panties. As she did, for the first time, Alex was treated to the sight of Hannah's private parts; with her legs lifted he could see the darker flesh around her asshole and furry pussy lips, once again framed by her pale thighs. As he went to put the pale yellow panties with the rest of her clothes, he could feel that the crotch was a bit damp. Hannah set her legs back down, still watching Alex intently. She couldn't believe that she was laying here, completely nude with the exception of her socks, other people all around, having been undressed by some guy she just met. "Damn, I didn't realize she kept things 'au naturale' down there," Erika thought, looking between her friend's legs. Curious, Erika checked the other women; one was shaven, the other not. "Now that she is laying bare before you, we must prepare her," said the instructor. "Please kneel beside her. Then, put your middle and ring finger from your hand closest to her feet and put them in your mouth. Get them nice and wet with your saliva." The men complied. "Now, ladies, relax and take a couple deep breaths." "Guys, take your hand and cup it against her vulva, with your palm resting on her pubic mound. Then, curl your middle and ring fingers, pushing them gently inside of her. You may find, that your partner is already wet; this is good, it means her body has already started to prepare to have your penis inside of it." Alex cupped his hand against Hannah's crotch, his palm on her hairy mound. Hannah spread her legs slightly, allowing him better access. He slowly started to curl his fingers inwards; his fingertips slipped between her labia and into her vagina. Hannah closed her eyes, her mouth opening slightly has she exhaled. Alex pushed his fingers in until they could go no further. "Alright, now I want you gentlemen to just take a moment and really concentrate on what you feel. Feel the intense warmth inside of her body. Feel the natural ridges and textures of her vagina. Imagine those textures, that warmth, enveloping your penis." Alex closed his eyes and imagined. His cock was already semi-hard, bulging in his shorts. As he concentrated he could feel Hannah's quick heartbeat through the walls of her vagina, lightly pulsing around his fingers. "If you rub your fingertips against the forward wall of her vagina, you should feel a rough spot." Alex moved his fingers and indeed could feel what the instructor was talking about. "This, is her g-spot. What we want to do is stimulate this, firmly and consistently. Move your fingers in and out of her so your fingertips rub back and forth against this spot, maintaining a steady pressure against it by curling your fingers." Alex started to finger Hannah, whose eyes were still closed. His fingers dipped in and out of her sex, his fingertips gliding over her g-spot again and again. As he continued, Hannah's breath started to become a little more raspy. She even moaned softly as the attractive stranger's fingers pushed against one of her most sensitive areas. She spread her legs wider, her knees bent, giving him the best access she could. "Next, you're going to keep your fingers perpendicular to your palm and move your whole hand up and down, keeping your fingers all the way inside of her. This will simultaneously stimulate her g-spot and her clitoris with your palm." Alex started, eliciting another moan from Hannah. He gradually increased the pace that he moved his hand up and down. He moved his hand vigorously, her belly, breasts, and thighs all jiggling with the movements. Before long, there was a wet squishing coming from between Hannah's legs, accompanying each movement. "Do you hear that?" the instructor asked, "That is the sound of your partner getting even wetter. Her body is yearning for you. By stimulating her in this way, you've ramped up the rate at which her body is secreting its natural lubricant. Don't stop, don't slow down." Alex continued, his palm rubbing against her clitoris, his fingers bumping against her g-spot. Hannah's hips lifted off the ground, her back arching as her orgasm neared. She let out a moan as it hit her. Her legs squeezed around Alex's hand, trembling a bit as they did. He left his fingers inside of her as she rode out her climax. One of the other women had already orgasmed, the other was well on her way. "You notice how her hips lifted, her legs closed? That's reflexive - involuntary. Her body thinks your fingers are a penis, and is trying to get it as deep inside of her as possible." Hannah's bare butt finally set back down on the mat. Her breathing was heavy. Alex still had his hand against her crotch, his fingers inside of her. The last woman finally came, her hips bucking as she had a screaming orgasm, squirting into her partner's hand. "Oooh, looks like we've got a squirter!" the instructor called out. After the woman had finished cumming, the instructor spoke again, "As you take out your fingers, take a moment to look at them." Alex pulled out his fingers and looked at his hand. His fingers were covered in a clearish-white, creamy fluid. He spread his fingers apart, watching Hannah's grool web between them. "See that? The fluid coating your fingers is her vagina's natural lubricant. She produced those, because of you, for you," the instructor spoke, her voice sultry. "That fluid is a direct result of her arousal." The room was filled with the sound of heavy breathing. A distinctly feminine musk now hung in the air. "Feel free to lick your fingers; taste her desire for you," the instructor continued. Hannah blushed deeply as she watched Alex put his fingers back in his mouth, licking all of her grool off of them. Erika watched as her friend settled back down from her climax, more than a little jealous of the experience she had just had at the hands of her attractive partner. "Alright ladies, now it's time for us to get the guys ready. Men, if you could please stand to the side of the mat, ladies get onto your knees," the instructor spoke. "Guys, you can go ahead and remove your own shirts." And so they did, with Alex pulling his off over his head and dropping in on the ground. "Ladies, go ahead and pull down his shorts," the instructor advised. Hannah, standing on her knees in front of Alex, put her fingers in the elastic waistband of his shorts and pulled them down. He stepped out of them and she tossed them aside. He was already barefoot and stood only in his underwear. "Next, his underwear." Alex was wearing dark red, plaid boxer shorts that didn't do much to conceal the mostly hard erection he had. This time, Hannah's eyes were focused on her task as she pulled down his boxers, freeing his cock, which bounded back up after the waistband had passed over it. He stepped out of his boxers and Hannah tossed them with his shorts. "Now we're talking," Erika thought to herself, watching Hannah undress the handsome stranger. His circumcised cock was standing mostly erect, a good six inches or so long. "Is it getting hot in here, or is it just me?" Erika asked quietly to herself. She unzipped and removed her hoodie, laying it across the half-wall she was standing behind. Hannah admired Alex's package for a moment; his girthy penis, his testicles hanging loosely, a bit of precome leaking from his tip. She remembered that she should probably look at him too. Her eyes shot up and she gazed into his eyes. Hannah blushed. "Now ladies, I just want you to fondle and hold his package. Grip his penis softly, feel its warmth. Cup his testicles, lift them a little; feel their weight and think about millions of sperm inside of them, just waiting to come out. Noticed how his penis reacts to your touch." Hannah followed the instructor's directions, further admiring Alex's cock. As she touched his cock it grew a bit harder. She cupped his balls with her hand, lifting them slightly and holding their weight in her hand. She was surprised at their heft; she had never really held testicles in her hand before. Alex has a rather large pair of testicles that filled Hannah's hand as she held them. "Next, I want you to lick his penis. Take it into your mouth," the instructor spoke. "Men respond best to warmth and soft, wet textures. In fact, some of the tissues in your mouth are the same kind of tissues as inside of your vagina. This is why fellatio is the ideal way to prepare a man for intercourse." Hannah complied and licked from the base of Alex's cock to the head. Alex closed his eyes and focused on the pleasure. Next, she wrapped her lips around his tip and licked as his urethra, tasting his precome. She started to suck on him, moving her mouth up and down is length. "Take him as far into your mouth as you're comfortable," said the instructor. "The flesh of your cheeks and the back of your throat most closely resemble your vagina. Note how he responds to what you do. Find something that makes him tick and stick with it." Hannah slid the tip of Alex's penis along the roof of her mouth, careful not to touch him with her teeth, until his tip was pushing against her soft palette near her throat. He definitely seemed to like that, and he let out an audible moan. "Jesus." Erika muttered under her breath as she watched Hannah take nearly all of his length into her mouth. "How can she-?" Erika's thought was cut short by the instructor piping up, "Alright, that's probably enough. We can't let him orgasm just yet. Since males have a refractory period and usually aren't able to experience multiple orgasms like we are, we need to keep them from doing so so we can continue." Hannah removed Alex's penis from her mouth, which was now glistening with her saliva. "Okay! Now I'll ask the ladies to please attempt 'Ardha Sarvangasana' or 'half-shoulder stand' pose. For this you are going to lay flat on your back. Then gently raise the lower part of your body vertically and use your hands to help hold your hips up. Support the weight of your hips on your arms and shoulders" The instructor demonstrated the pose. Hannah did as the instructor said and soon her legs were high in the air, her hips supported by her hands. She lay there, looking up at her toes, wondering what was next. "Now, guys, I think it's only fair that since she took you in her mouth, that you return the favor with a little cunnilingus. In this pose, you should have easy access with her holding her hips up." Alex moved around, as did the other men, until he was towards his partner's backside. He took in the sight of Hannah's plump, pale butt, her furry pussy lips peeking out from between her thighs, her tight, dark asshole. He got onto his knees and leaned in. He buried his face against her thighs, against her pussy. He inhaled deeply through his nose, taking in the erotic, aroused scent of his geeky partner. "With the tip of your tongue, search for her clitoris. By now, it should be firm, like a little button towards the top of her labia," spoke the instructor. Alex stuck out his tongue and pushed it into Hannah's slit, licking upwards, searching around with his tongue until at last he located her sensitive clit. Hannah squirmed a little as the tip of Alex's warm, wet tongue brushed against her clitoris. He flicked his tongue quickly against the bundle of nerves; Hannah had some trouble maintaining the position as her clitoris was licked again and again. Her legs spread slightly and drooped down; she was unable to hold them straight up. Hannah could already start to feel her next orgasm building within her. Alex licked downwards, sliding his tongue through the full length of her slit. He plunged his tongue deep into her vagina, tasting her once more. He curled his tongue, pushing the tip of it against that same rough spot inside of her that he had stimulated earlier. He withdrew his tongue and proceeded to lick her asshole a few times, sending shivers through Hannah; she had not been expecting that. It tickled a bit, but somehow seemed to make her even hornier. She liked it. "Okay, go ahead and relax ladies." The men stepped back and the ladies in the class returned to a resting position on their backs. "Next, I want the girls to get into 'Ananda Balasana' or 'happy baby' pose. To do this, bring your knees towards your belly. Then, grip the outsides of your feet with your hands. Open your knees slightly wider than your torso, and bring them towards your armpits." Again, the instructor showed the class how the pose was done. Hannah followed along and was surprised how easy it was. Before long, she was laying flat on her back, holding her feet in the air. Erika watched intently, wondering what was going to happen next. "Now guys, I want you to take a second to really look at your partner. In this pose, she is the most open, the most vulnerable, the most exposed a woman can be. Her legs are spread, her hips tilted, opening her up as much as possible. She is presenting herself to you - putting her genitals on full display," the instructor described. Alex admired Hannah, holding onto her socks. Her hairy vulva and her asshole were prominently on display, standing out against her pale skin. "She wants you to take her," the instructor told the men. Hannah blushed; the instructor was right - there was nothing more that Hannah wanted at that moment than for Alex to fuck her. "Ladies, tell your partner exactly what it is you want," the instructor asked. Alex leaned in so he could hear, still admiring Hannah's vulnerable position. "I want you inside me," Hannah stated, a certain urgency in her request. She was embarrassed at the words coming out of her mouth, but it was true; she was the horniest she had been in a very long time, perhaps ever. Now it was Alex's turn to blush. "You may enter her whenever you're ready," the instructor said with a smile, sensing the need in all of her students. Even Erika could feel the intensity of the desire, hanging in the room. It was like a dog, tugging at its leash, just out of reach of a delicious bone. Alex hastily tore open the condom wrapper and tossed it aside. He rolled the condom down his very erect cock and got on his knees in front of Hannah. Hannah watched eagerly, anticipating him penetrating her. He held himself with one hand and with the other positioned himself at her entrance. In once swift, deep thrust, he pushed his entire length inside of Hannah. "Yeees! Ooooooh fuck!" moaned Hannah, instantly orgasming as his member pushed all the way inside of her. She was so wet that he slid in easily. She barely managed to maintain her grip on her feet; her legs trembling as the powerful orgasm rocketed through her body. "It looks like she was ready," the instructor remarked to Alex with a knowing smile. "Can you feel it? Her orgasm?" she asked. "If you stay still and pay close attention, you might be able to feel her contractions as they squeeze you." Alex nodded. Even Erika could see them from her vantage point; she watched her friend's asshole twitching rhythmically as Hannah climaxed. "Those contractions are not only meant to encourage the male to ejaculate, but deep inside of her, her cervix is also flexing back and forth. It's hoping that there is a pool of semen waiting at the back of her vagina that it can dip itself into over and over," the instructor informed Alex who was listening intently, but eager to return to fucking his nerdy partner. "Holy shit, this is fucking hot," Erika muttered under her breath as Hannah finally came down from her climax, Alex still buried deep inside of her, his balls resting against her asshole. As time went on, Erika felt more and more aroused by the display she was watching. Even though she had initially thought this was crazy, she found herself wanting to give anything to be in Hannah's place. Alex was pounding into Hannah, his wrapped dick thrusting in and out of her warm hole. Hannah struggled to maintain hold of her feet through the barrage of pleasure and movement. As if sensing this, the instructor spoke up, "don't worry if you can't maintain the pose - that's perfectly natural." Hannah let go of her feet, resting her arms on the floor above her head. Her legs came to rest on Alex's thighs. As the handsome stranger continued to fuck her, Erika watched as Hannah's feet, still inside in her cute, juvenile socks, bounced freely from his movements. His hips slapped noisily against hers; in fact, the room was filled with the sounds of sex: flesh slapping against naked flesh, heavy breathing, some moaning from the women. Hannah and one of the other women produced sweet moans as they lay there on their backs, men pounding down into them. These weren't the fake moans that one might here in a cheap porno; their moans were softer, involuntary, genuine. "Those moans?" the instructor prompted, eager to reveal more about human sexuality, "They're known as 'Female Copulatory Vocalizations' and they actually serve an evolutionary purpose. They were to let others know that pleasurable sex was being had, in order to increase male competition. Additional males might come and investigate, wanting in on the action. In addition, other females might check it out and become aroused, encouraging even more reproduction. During orgasm in particular, they are usually in time with the waves of pleasure she is feeling, in time with her contractions. This can encourage the male to ejaculate and even produce higher quality sperm." The instructor's explanation seemed to egg the men on; they seemed to fuck their partners faster and harder. The primal instincts were still very present and very much active. The instructor was walking around the classroom, watching her students closely, waiting to educate them further but also wanting them to enjoy themselves and each other. Erika couldn't believe just how turned on she was feeling. "Then again, I am watching a bunch of people getting it on," she thought to herself, "I guess I shouldn't be so surprised." Watching Hannah and Alex in particular seemed to turn her on the most. It was something about Hannah - her best friend who she had never really thought about as a sexual being. Sure they might have joked about stuff on occasion, but to actually see her naked, moaning, and in the throes of passion - it was a whole different side of her she had never seen. The Hannah she knew was into video games and Magic: The Gathering cards; and yet, here was that same girl, flat on her back, her legs in the air, being fucked by a guy she didn't even know. Maybe it was her socks - those same silly, dorky socks that Erika had seen Hannah walking around in their apartment in, many times before - moving up and down each time Alex rammed inside of her. The juxtaposition of something as innocent as her fox socks, bouncing around from something so carnal, felt taboo, erotic. It solidified in Erika's mind that the girl getting roughly fucked in front of her was indeed her nerdy, typically innocent friend - connecting the two seemingly opposite characters. Erika shifted her weight from one foot to the other; as she did, she could feel the slickness as her labia rubbed against each other. "Fuck I'm wet," she thought to herself. An idea popped into her mind; the instructor was paying attention to her students, the participants were obviously quite preoccupied, the door behind her was locked. Erika looked around again, double checking over her shoulder. She was afforded some privacy by the half-wall that she was standing behind. Erika unbuttoned her jeans and pulled the zipper down. Keeping a weary eye on the instructor, Erika pushed her jeans down around her thighs. She pulled down her underwear, just enough that they uncovered her ass. She peeled the front of her underwear away from her body so she could peek inside of them. Past her shaved slit, Erika could see the mess she had made in her dark purple panties; clear, slimy grool was smeared all over the soft cotton patch in the crotch of her underwear. A thin strand of grool stretched between her pulled-down-panties and her pussy lips. Erika was just reaching down towards her crotch when she was startled by the sound of a small gong ringing out. She looked up quickly to see the instructor standing back at the front of the classroom, holding a small brass gong and mallet. Erika quickly pulled up her hand and leaned against the half-wall again, acting nonchalant, her pants and underwear still down around her thighs. The students also were a bit startled and stopped moving, looking up at the instructor. "Sorry about that, forgot to warn you at the start of the class," the instructor spoke, "I will ring this gong when it is time for us to switch to a new position." "Oh thank god," Erika thought to herself, letting out a relieved sigh - worried she had been caught. "Next up, we are going to try a position called 'Adho Mukha Svanasana', more commonly known as the 'Downward Facing Dog.'" Some of the students seemed to nod having heard of the common yoga pose. "Men, stand back and watch from your partner behind. Ladies, start by getting on your hands and knees. Put your knees directly behind your hips and your hands forward of your shoulders. Lift your knees from the floor, transferring your weight to your feet. Straighten your legs until your body forms and upside-down 'V' shape. Walk your feet apart so your legs are spread." The instructor demonstrated and the women followed her example. Before long, the three female students where all in the pose, their naked butts high in the air. "Now men, I had you watch her from behind because I wanted you to get the full visual effect of her entering this pose," the instructor continued. "In this position, ladies, you are presenting him with your bare hindquarters. Much like an animal in heat might do when attracting a mate. Your buttocks, anus, and vulva are proudly on display for him, and believe me, he is looking," she affirmed, checking around the class. "By presenting yourself this way, you are activating something primal, something animalistic within him. There's also the added benefit that your clitoris should be pushed rearward; meaning that each time his penis slides into you, is testicles should bump against it, adding to your enjoyment. Additionally, if you look back and up, between your breasts, you should get a nice view of him sliding in and out of you." "Alright men, mount her and claim your prize," the instructor finished off her instruction, her voice dripping with seduction, urging the men on. The men did as they were instructed, though it was clear that they needed little instruction or encouragement. The instructor was right when she said it had activated some baser instincts within them. Alex stepped between Hannah's spread legs, taking his cock in his hand and guiding it to her entrance. He grabbed onto her hips as he pushed himself back inside of her. Alex pounded into Hannah once more; his hips seemed to have a mind of their own as he fucked her quickly, like a male dog rutting his bitch. Hannah's large breasts swung as her body shifted each time his hips slammed against hers. The instructor was right about his balls; they were bumping against her clitoris again and again. It was again difficult for Hannah to maintain the position, this time because her socks kept slipping on the mat. But she dared not move, lest she interrupt the pleasure she was feeling. She curled her toes, digging them into the mat to help stabilize her. The sound of bare thighs slapping against bare ass cheeks filled the room. The instructor again started to walk around the class, watching her students. Erika reached between her legs once more, watching Hannah and Alex fuck like rabbits. Erika leaned forward against the wall, her pants still part-way down, and started to rub her clit with her fingers. She felt like a naughty voyeur as she looked between her friend's legs, seeing Hannah's eyes shut beneath her swinging breasts. Erika would alternate between watching Alex's firm ass thrusting back and forth and watching Hannah's face - watching as the pleasure from his movements manifest itself in her expressions. Hannah had no idea that her best friend was masturbating while watching her have sex. In fact, she had pretty much forgotten Erika was even there. All that seemed to matter was Alex. How her body was connected to his; the feeling of him inside of her. Despite the pleasure, of perhaps even in part because of the pleasure, it was getting harder and harder to hold herself up. Luckily, the instructor seemed to notice her students tiring and rang the gong once more. "Gentlemen, observe as you step back, how your partner's vagina stays open. Before her muscles have a chance to close up, her entrance should be agape - about the size of your penis. It's almost as if her body is anticipating you thrusting back inside; staying open in the hopes you will insert yourself into her once more." Alex stepped back, watching Hannah's holes as he did. Just as the instructor had said, the pink flesh around her vagina stayed open. He could see a little bit inside her dark tunnel for a few moments, before her tantalizing walls of flesh closed up once more. "This time class, we are going to give the men a break and let the women control the movement," the instructor said. "Men, please lay flat on your backs." Alex and the other men laid down on their respective partners' mats, their erections standing straight up into the air. "The men are in the 'Shavasana' pose or 'Corpse' pose," the instructor informed. There were some giggles around the room. "Yes, yes - not the most attractive name I suppose, but, the main point is that they are there for you to do with what you please. They are lying there, their penises fully erect, wanting nothing more than to be back inside of you." And with that, the instructor started to walk the room again, indicating it was up to the women to choose what to do next. The woman from the couple climbed on top of her man and started to ride him, cowgirl style. The other pair did the same but in reverse, with her facing away from him. Hannah looked at both, deciding what she wanted to do. Hannah climbed onto Alex, facing him, her legs on either side of him. She lifted her hips and reached back for his dick, guiding it to her slit. She pushed him into her a bit and then rocked her hips, sliding about half of his length inside of her. Hannah leaned forward and watched Alex's expression as she slowly sank the rest of the way onto him. His expression was one of pleasurable agony as Hannah bottomed out on him, her chubby white butt pressing against his thighs. She smiled playfully as she teased him, moving up and down on him slowly. However, she knew she couldn't keep up this tantalizingly slow pace; she too wanted more. Hannah leaned forward and started bouncing her hips up and down on his hard cock. She kissed him, lightly at first and then passionately; he returned the kiss with pleasure. With Hannah leaning forward, Erika was treated to a wonderful view as she watched Alex's girthy cock disappear inside of her best friend again and again. She continued to rub her clitoris as Hannah's pussy lips slid up and down his condom-wrapped penis. Erika wanted more; she reached further back and sank two of her fingers into her vagina, curling them in and out. She was leaning fully forward, against the half-wall, her butt sticking out behind her. It was lucky the door was locked, as anyone who entered would have had a full-on view of Erika's pale, bare ass - her fingers deep inside her shaved pussy. Alex grabbed Hannah's ass, holding it with both hands. As he held it up, he lifted his own hips up and down, fucking Hannah quicker. The instructor saw this and strolled over and wagged her finger playfully, "Ah-ah, naughty. This is her turn to decide what the pace is. You have to just lie there," the instructor chastised him but with a smile on her face. Alex blushed at his eagerness and resumed the corpse pose, his arms out to the sides. Hannah smiled, reassuring him she wasn't bothered by what he had done. She leaned back in and gave him another kiss and resumed her bouncing, this time at a faster pace; she knew what her lover wanted and she was happy to oblige. A few more minutes passed and an idea popped into Hannah's mind. Well, more accurately, it had been on Hannah's mind since the beginning, but only now did she have the opportunity. Hannah lifted herself off of Alex's dick, squatting above it. Alex opened his eyes and looked up at her, confused at why the pleasure had stopped and wondering what she was planning. Hannah gave him a sly smile and reached back towards his dick. She looked down, watching what she was doing, and pulled the condom up and off of his penis, tossing it aside. She looked back into Alex's eyes, gauging his reaction. It was one of excitement, though he was trying to conceal it some. With the same hand, she held his now bare cock steady as she sank back down onto it. Alex moaned softly and Hannah let out a shuddering breath as the two felt the bare intimate flesh of the other for the first time. To Alex, Hannah's vagina felt softer, warmer, and even more welcoming than he remembered feeling with his fingers. To Hannah, something about the feeling of his cock just felt right; the feeling of his bare skin gliding inside of her felt so good that it had to be right - this was how it was meant to be. Erika's jaw dropped a little as she saw her best friend take off the condom and start to ride a practical stranger bareback. She would never have guessed in a million years that Hannah would have been so bold. Seeing Alex's bare cock disappearing up inside her friend again and again was somehow even more arousing than before. Erika continued to finger herself, using her palm to rub against her clit as she did. Hannah could feel an orgasm starting to build within her loins. She sank all the way down onto Alex and started to rock her hips back and forth, grinding against him. However, her feet kept slipping out from under her, since her socks provided little grip on the mat in this position. Hannah paused, reaching back urgently, yanking off her socks as quickly as she could, not even bothering to care where they ended up. To her, they were just an obstacle in the way of her pleasure. With her now bare feet splayed out on either side of Alex, Hannah had all the grip she needed. She started rocking her hips again, harder and faster than before. Inside of her, his penis stirred around inside her vagina and her clit rubbed against his pelvis. She rocked her hips faster; she was close. The instructor rang the gong, but Hannah didn't stop, she couldn't stop. The other participants and instructor watched as Hannah continued to grind on Alex, his dick buried as far inside of her as it could go, her eyes shut tight, moaning each time her clit rubbed against him and his penis slapped against the front wall of her vagina. At last it came; she let out a moan that ended in a squeak and felt her body shudder as the orgasm tore through her like electricity. She leaned forward, laying against Alex, her breasts pressing against his chest. Hannah rode out her orgasm, breathing heavily atop her partner. Erika, with a full view of the intimate details, watched as her best friend's asshole once more as it puckered rapidly, over and over. Hannah finally came to realize that everyone in the class was watching them; she blushed and looked down, still atop Alex. "Don't be ashamed," remarked the instructor, "your body was likely compelling you to continue." Hannah nodded. "Excellent!" the instructor exclaimed, "That means you're doing it right." "Alright! Next up is 'Salamba Bhujangasana' or 'Sphinx Pose' - it's a bit like 'Bhujangasana' or 'Cobra' pose, but easier to do. Ladies, go ahead and dismount your partners." Hannah stood up, Alex's penis sliding out of her and slapping against his belly. "Guys, go ahead and stand up. Then ladies, lay down on your stomach. Place your forearms parallel to each other with elbows under your shoulders and palms facing the ground. Place the tops of your feet against the mat. Your chest should be off the mat and you're looking forward," the instructor guided, demonstrating once more. The women got into the position, propping themselves up on their mats with their forearms. Erika watched the women get into position, but she was more mesmerized by Alex's cock as it swung around freely as he moved. It was shiny - slick with Hannah's juices; even across the room she could see that his cock was coated in them. Erika briefly rubbed her clit faster then remembered it was "transitioning time" and stopped, not wanting to draw attention to herself. "Guys, you're going to get on top of her, sliding your penis between her thighs and into her vagina," spoke the instructor. "The benefit of this position, is that it's fairly easy for both of you. Additionally, the glans of your penis will be grinding against her g-spot, which both of you should enjoy." Alex climbed on top of Hannah, his legs on either side of hers and lowered himself down. With Hannah's legs together, he couldn't quite see where he was going to be putting his dick; her chubby white thighs and butt hid her slit. He slid is cock up between her thighs and soon enough, his dick found exactly what it was looking for. He pushed inside of her warm, welcoming love tunnel once more. Hannah let out a pleasured sigh as she was filled once again. Alex started thrusting in and out of her, his hips pushing against her plump ass each time he penetrated deep. Just like the instructor said, the head of his penis was soon grinding directly against her g-spot again and again. Each time he thrust into her, grinding against it, a moan escaped from her lips. "See how much she enjoys that?" the instructor asked rhetorically. Erika wasn't able to see as much with this position, but she could still hear Hannah. She did have a nice view of Alex's toned back, legs and ass though as he bounced on top of her. The contrast of his more tanned skin tone against Hannah's pale skin; the way the tops of her feet lifted off the mat slightly each time he thrust inside; the slapping of his hips against her bare ass - there was still plenty for Erika to get excited about and she resumed fingering herself behind the half-wall. She timed it so her fingers sank into her vagina each time Alex would thrust - imagining it was her that he was fucking. Hannah could feel another orgasm building, the stimulation against her g-spot paying off. However, before she could reach it, the instructor rang that damn gong again. Since Alex was in control of the movement this time, he stopped. Hannah tried to buck her hips back against him, wanting more, but in this position it was difficult. He withdrew himself and awaited the teacher's instructions. Hannah looked back and he playfully wagged his finger at her, just as the instructor had done to him. "I know, I know," the teacher said, sensing her students' frustration, "but our time is almost up. For this last and final bit of time, I want you all to spend it however you want. This class, after all, is about enjoyment and pleasure, being connected with another human in the most intimate way possible. So, it is up to you all what you do." Hannah knew immediately what she wanted. She rolled over onto her back once more, lifting her feet in the air. She gripped onto the bare soles of her feet as she got back into the 'Happy Baby Pose.' With her legs spread wide, Hannah's pussy and asshole were put on display again. Alex took in the view of his completely nude partner, laying in a most compromising position, offering herself to him. He got down and positioned himself between her legs. He place his hands firmly on the mat to either side of her head. While gazing into her eyes, he softly thrust around with his hips, poking her with his erection - searching. On the third try, he found was he was looking for. Alex's cock dipped into Hannah's wet slit once more, the two never breaking eye contact. He watched as her excited, anticipatory expression melted away into one of pure bliss as he sank into her. Erika resumed masturbating, sinking her fingers into her own sodden box in time with Alex's movements. Hannah let go of her feet once Alex was inside of her. Alex kissed Hannah passionately as the two resumed their lovemaking. He moved slower this time, sliding in and out of Hannah at a steady pace. Hannah wrapped her arms around his neck, returning his kisses, enjoying the passion of their connection. The instructor spoke up once more, "Ladies, I want you to really think about your partner as he goes in and out of you. I want you to think about how his arousal is all because of you. I want you to think about how perfectly your bodies fit together; despite coming from different walks of life, your bodies still interlock perfectly. Your body, your scent, your sounds - all of these are driving him wild; his penis wants nothing more than to serve its purpose: to inseminate you. Even if your partner is wearing a condom, his penis isn't phased - his body desperately wants to breed you." Hannah moaned lightly, thinking about what the instructor had said. It was true; her body wasn't made specifically for Alex, and yet here he was, filling her like they were made for each other. The instructor continued, "Men, I want you to think about how this woman has opened herself up to you. How she has shown you her most private and intimate parts; let you penetrate her and enter her sacred body. I want you to think about how her arousal is because of you. How she molds to the shape of you; she was not born with a sheath intended for you and yet she is now gripping you perfectly. I want you to think about how her vagina is doing exactly what it's designed to do: it is doing everything it can to get the penis inside of it to ejaculate. The warmth, the wetness, the softness - all intended to bring you to orgasm inside of her. Even if you're wearing a condom, her body is still doing everything it can to milk you of your semen." Alex grunted a bit and picked up his pace, spurred on by the instructor's words. He focused on the feeling of Hannah as he plunged in and out of her. Erika continued to fingerfuck herself, watching the stranger pound into her best friend. They had stopped kissing - they were now both entirely focused on the interaction of their parts. Occasionally, Alex would peek down and watch himself disappear inside of her, but most of the time, they were watching each other's expressions their climaxes built. Hannah's body jiggled in time with Alex's thrusts. Erika could feel her own orgasm finally approaching. If it wasn't for the sounds of sex already filling the room, someone would have surely heard the wet squishing as she shoved her fingers vigorously in and out of her own tight hole. Erika let out a shaky breath, her climax hitting her a bit early, catching her off guard. She shut her eyes, her legs clasped together, her thighs holding her wrist in place, her fingers still buried inside. Her knees buckled and she sank down a bit towards the floor. She bit her bottom lip, trying desperately to keep from making any noise as the waves of pleasure crashed through her. Erika's orgasm was long and powerful - she felt her vagina spasm around her fingers rapidly. She opened her eyes. The students were all still fucking and nobody had seemed to notice her playing with herself. Erika pulled out her fingers and looked at them; they were covered in her grool. Her fingertips were even somewhat wrinkled from being immersed in her wet pussy for so long. She wiped her grool on a dry area of her panties. Erika pulled her underwear and jeans back up, buttoning them covertly. "Nobody the wiser," she said to herself quietly. Alex was still roughly fucking her best friend on the floor. She watched Hannah's pink vagina grip his cock as it plunged in and out of her. Alex was getting close; she could tell. Hannah had noticed too. She moaned up at him, looking into his eyes, "Inside. I want it, inside." Alex wasn't going to argue and he bucked his hips faster. His hips smacked loudly against Hannah's thighs. Hannah couldn't wait; she wanted it so badly. Hannah climaxed at the first burst of warm cum that erupted from Alex's cock inside of her. She moaned loudly as his orgasm began. The soles of her feet, still hanging in the air, wrinkled as her own orgasm forced her feet to scrunch. Hannah's toes curled from the intense pleasure. Just when it seemed like her climax was subsiding, a thought crossed Hannah's mind: "A hot guy you just met is filling you with his sperm." The thought seemed to draw out and intensify her orgasm. Erika watched as the pair came. She could see Alex's cock pulsing; the thick vein running along the bottom of his shaft throbbed hard and fast as he pumped his load into Hannah. Erika thought about how each time that thick line pulsed, more of the stranger's semen was being shot inside of her friend. Inside of Hannah, Alex's cum was pooling in the back of her vagina. As her orgasm intensified, powerful contractions dunked her cervix into the waiting pool of semen over and over as her body desperately tried to bring his sperm inside her womb. After a bit, their orgasms had subsided. Alex's cock still throbbed once and a while, dribbling a little more cum inside of Hannah. He withdrew himself. His penis popped out of her with an audible 'pop' as the airtight seal between them was broken. Hannah's vagina was gaping from their intense fucking; the hole to her pink, fleshy tunnel stayed open, as if waiting to be filled again. Alex's cock, covered in their combined juices, dangled above her furry slit. "Well, it was uh...nice to meet you Hannah," Alex said jokingly. Hannah giggled. The cum that had pooled in the back of her vagina was forced out of her, as her abdominal muscles contracted with laughter. Erika watched as thick globs of Alex's cloudy white cum squeezed out of Hannah's vagina and cascaded down over her pale cheeks and dark asshole before finally falling onto the yoga mat. Erika was amazed at just how much came out of Hannah. "He must have been pretty pent up," she thought to herself. Hannah had reached down, trying to catch his cum when she realized it was leaking out of her, but she was too late. She looked around and luckily the instructor had come by and left a roll of toilet paper nearby sometime during their sex session. She tore some off and reached down between her legs, wiping herself. The couple to their left had finished before them; but the other pair of strangers were still going at it, now doing it doggystyle. The rest of the class watched as they finished. He buried himself deep inside of her as he came. When he pulled out, the condom filled with his cum also pulled out of the girl's pussy. "There's a decent amount of cum inside of it - not nearly as much as had fallen out of Hannah," Erika thought to herself, still amazed at the size of Alex's load. The students started getting dressed, chatting with one another casually. Hannah finally looked back at Erika, waving awkwardly and blushing intensely, finally remembering she was there and realizing that she had just witnessed everything. Hannah bent down, and picked up her panties. She held them apart and stepped into them before pulling them up snug. Her head swiveled as she looked around for her socks; one had gotten knocked a ways away when she had ripped them off. Hannah turned them right side out again and put them on. Erika watched patiently as she finished watching her friend and the handsome stranger get dressed. "Well class, I hope you all had fun and I look forward to seeing you next time!" said the instructor with a smile. The students started to shuffle out of the classroom. Erika waited for Hannah and the two walked out together. Most of the students rode the elevator down together. As Erika and Hannah exited the building, they turned left to head back to their apartment. A voice called out from behind them, "Bye! I hope you had fun!" It was Alex, waving from the entrance to the building before turning and heading the opposite direction. Hannah waved back and giggled, blushing when she caught Erika's eye. "Whew, that was..." she said "Something else?" Erika finished the thought for her. "Yeah, for sure," Hannah replied. "Did you enjoy it?" Erika shrugged and said with a smirk, "I guess you could say that." No way was she about to tell Hannah that she had just masturbated to the sight of her getting fucked. "Also, I told you it was some weird sex thing!" Hannah laughed, Erika joining in a second later as they continued on down the sidewalk. The two friends had shared in an experience that was intimate, personal, erotic - and they both felt closer because of it. "Who knows, maybe next time you can actually join and have a partner too," Hannah said, sticking out her tongue, dashing a bit ahead so she was out of Erika's reach as she tried to punch her.