Note: This story was dynamically reformatted for online reading convenience. The Halloween Party bg/group/inc Nine-year-old Shelly and her eleven-year-old brother Justin were going to host a small Halloween party in their basement. They invited a few of their friends, including Shelly's best friend Nina and her twelve-year-old brother, Tomas, Justin's best friend Kenny and his eight-year-old sister Kimmy, as well as their neighborhood friends, a ten-year-old pair of twins Joseph and Joanne. They invited the pairs because they asked them to come as their favorite pair of characters from books, TV, movies, or whatever. They also invited them as pairs because they had talked their friends (not necessarily their siblings) into having a sex party. Shelly and Nina had been experimenting with each other as had Justin and Kenny. Of course Shelly and Justin had been having sex for about a year now. The siblings never had any modesty around each other and loved to be naked around each other. They also practiced on each other everything they picked up in terms of kissing and other sexual activities. The first time they had sex was after they accidentally saw their parents having sex. They saw that both their mother and father were having so much fun that they decided to emulate them, both enjoying the experience a lot, though Shelly never orgasmed and Justin's cum was sterile. But a lot had happened in a year and now they both were able to perform fully. Shelly and Justin's parents allowed them to have the party telling them they were going to be right next door at a party hosted by Nina and Tomas' parents just in case they needed any help. Kenny and Kimmy were both red-heads and they showed up first dressed up in Hogwarts robes as Ron and his sister Ginny Weasley from Harry Potter. Kenny and Justin had experimented together and Kenny wanted some help getting Kimmy interested. Nina and Tomas came as Misty and Ash from Pokemon. Nina wanted to lose her virginity to her brother and this would be the best way to introduce him. Joseph and Joanne, like Shelly and Justin, already were having sex with each other. This only recently came out when Shelly and Joanne were talking one day about sex. They four of them wanted to get together before this party, but they never got a chance. They came as Bart and Lisa from the Simpsons. After everyone arrived for the party, the other three pairs of siblings noticed that Shelly and Justin were not in costume. "Oh, we've got something special. In fact, we're going to change now that everyone has arrived." They had some food out and music on and excused themselves to get changed. They both went into a downstairs bedroom that they had converted into a guest bedroom for smaller sleepovers. Their costumes did not consist of much. They were going to be Adam and Eve. Shelly had a wig that had long hair and she was going to let it flow down the front of her body, covering her chest as they always show in pictures. They also both had made fig leaves for their fronts which they tied around their waists. That was the only thing they wore. They were naked otherwise. When they came out of the room, all eyes were on them, and they were looks of surprise. "We're Adam and Eve." Shelly announced. "Is that all you are wearing?" Kimmy asked, amazed to see so much naked skin. "Yep." Shelly proudly answered as she spun around to show her completely naked backside. Her hair was spreading out in her spin and the guests got a glimpse of her preteen nipples. "Well, I like what I am seeing." Kenny joked. "That is about as daring as I can imagine.' "Me, too." Kimmy agreed with her brother. "I wish I had thought about that, but Mom and Dad would have never allowed it." "What they don't know won't kill them." Shelly said to Kimmy. "Our parents do not know we are wearing this. We did it because we like being naked." "Wait a minute," Kenny said looking at his sister, "you wanted to be a little nudist for Halloween?" "I already love being naked." she admitted to her brother. "I just wish I could do so more in the house." "Even in front of Mom, Dad, and me?" Kenny was both amazed and getting turned on. "Yeah. I sleep naked and sometimes just want to leave my room that way, too." "Well I would love to see that." Kenny mentioned. "In fact, I would love to join you sometimes." "You know, we also like to go naked in our house." Joanne said. "Our parents want us to stop, but they haven't gotten too mad yet." Joseph added. "We used to like to go naked a few years ago, too." Nina admitted as well. "I always liked the baths together and sometimes feel a little lonely in there by myself." "And I admit that I loved helping you wash yourself, too." Tomas told his sister. "I wish sometimes that I could still be in there with you when you are taking a bath." Shelly and Justin were excited at the talk that had started with their ice-breaking costumes but it got even better when Kimmy got bold. "Would it be OK if I took my costume off?" That elicited smiles from everyone, especially her brother. "Sure." Shelly replied. "Keep your robe on, though. That will be so cool!" Kenny told her. She giggled at her brother's suggestion, but had to take it off in order to get her shirt off. Kimmy then removed her pants and underwear in full view of everyone else. No one said anything as they watched this eight-year-old girl show no modesty as she got naked. With all of her clothes off, she picked the Hogwarts robe up and put it back on. "All right Kenny, I dare you to get naked like me, too." Kimmy said in her boldest voice. He looked around at everyone else who were still stunned that Kimmy had gotten naked so eagerly. "Fine, but no one talks about this to anyone. Agreed." Kenny said to everyone. They all agreed not to say anything about what happened during this party. With that, Kenny, like his sister, removed his clothes and put his Hogwarts robe back on. His cock, however, was as hard as it had been in a while. "Well, since we love going naked at home..." Joseph began as he started to remove his own costume, although he kept on the Bart wig he was wearing. Joanne was not far behind her brother and stripped off her Lisa dress while also keeping the wig on. "When in Rome..." Nina giggled as she took her costume off. Tomas was amazed to watch his sister getting naked right in front of him. She was very modest at home. "Nina!" Tomas exclaimed. He was both shocked and turned on seeing his sister strip not only in his presence, but around her friends as well. "Oh come on, Tomas. You've wanted to see me like this for a long time." she teased her brother, posing seductively. "It's your turn now." Nina said as she went over to Tomas and started to unbutton his shirt. He allowed her to take his shirt off but stopped her when she got to his pants. "I don't know, Nina. This feels wrong." Tomas was hesitant getting naked around everyone, especially his younger sister. "So be bad." Nina smiled at him. She got on her toes and gave him a kiss on his cheek. "Please?" Tomas looked at her puppy-dog eyes, something he rarely could resist. "Fine." he relented and took his pants off. Standing in just his underwear, he soon removed them as well, revealing his semi-erect and lightly haired cock to his sister and everyone else. Nina cooed at seeing her brother in his all-together. "All right, now that everyone is naked," Shelly began as both she and her brother removed the fig leaves from their waists, "I think we can get down to more serious business." There was a sexual tension in the room that threatened to erupt. "Each brother and sister has to kiss each other on the lips for ten seconds." "You first." Tomas dared his hosts. Justin and Shelly smiled at each other. "Fine." he said. "Time us." He leaned into his sister and they pressed their familiar lips together. They had to remember to be less frisky during this kiss so that they didn't immediately lead into sex. As it was, they had their hands rubbing down each others' backs and massaging their asses. The two other virgin couples were shocked at how intense they were getting. "Time's up." Joanne announced. "You two were hot and heavy there!" Nina said in amazement. She had not known that her friend was so incestuous with her brother. "Yeah!" Kenny exclaimed, reminiscing how he and Justin were experimenting as well. Now watching his friend getting so passionate with his sister, he could feel a need to do something as bad. "Who wants to go next?" Shelly asked. Kenny raised his hand. "We do." His sister gave him a questioning look. "It'll be fun." he answered her unvoiced question. "All right, when you start kissing, we'll start timing you." Shelly explained. "You ready?" Kenny asked. "I guess." Kimmy replied. Kenny leaned down the few inches to his sister's face and they started to kiss. Kimmy reached under his Hogwarts robe and was hugging his naked body. She was enjoying the naked kiss as much as Kenny was. The ten seconds went much faster than Kenny or Kimmy expected. Their kiss was an eye-opening experience and they just looked at each other in a new light with big smiled on their faces. "All right, we'll go next." Joseph announced. He and his sister were about as passionate as Justin and Shelly and were upset when the ten seconds flew by before they really got started. Nina and Tomas were the last couple. "Come on brother, I want a nice kiss." Nina said as she got in position in front of her brother. Tomas looked down at his willing sister and could not resist. He leaned down and met his lips with hers. All apprehension left Tomas in that kiss. His sister wanted this naked kiss and he was going to deliver. After the ten seconds, the thought of incest as bad was a thing of the past. After everyone kissed, Shelly and Justin knew they had two new incestuous sibling pairs. Now all they had to do was to introduce them to sex. "Who wants to play Halloween Truth or Dare?" Joseph asked. "How do you play that?" Kimmy wanted to know. "We get something to spin." Joseph began as Justin found a Twister spinner. "That'll do. OK, there are four colors and four of us. I'll give each one of us has a color. Shelly and Justin are green, Kimmy and Kenny are yellow. Nina and Tomas are red and Joanne and I are blue. Now when you spin a color, that team gets to choose truth or dare. If they choose truth, they must answer. If they won't answer, they have to take the double dare." "What if you spin your own color?" Tomas wondered. Joseph thought about that for a second, but it was Shelly who thought of a good response. "Your sibling has to answer or take the dare." Everyone agreed to the rules and they got set up, the siblings in pairs sitting around the spinner. They decided that Nina would go first. She spun the color green. "Dare." Shelly and Justin said together. "I dare both of you to spank each other on the butt." Giggles were let out, with Shelly and Justin smiling the most. "Be glad to." Shelly said. She turned around and put her bare ass in her brother's face. He gave her a few swats, not too hard, to his sister's butt. "Now kiss it to make it feel better." she joked with her brother. Much to her pleasure and everyone else's surprise, he did so, kissing both her butt cheeks. "Sit down, my turn." Justin said. She did the same thing, swatting her brother's butt followed by a few kisses to each cheek. Next to spin was Joseph. He spun the color red. "Truth." they agreed. "Did you really enjoy the kiss?" he asked. "I loved it." Nina grinned. "Tomas is a great kisser!" Tomas got a little red at that compliment. "I loved it, too." he admitted, looking straight at his sister. Kenny spun next and got a green. "Dare." Shelly and Justin once more answered. "I dare you to touch each other on your penis and vagina for ten seconds each." Kenny said, increasing the sexual tone. Shelly and Justin smiled at each other. "Time us." Justin said. Kenny told him to start and Justin began to touch his sister's familiar pussy lips. He gently rubbed her puffy outer lips while looking right into her eyes. She smiled right back at him with such an intense incestuous love of two kids destined to be together for the rest of their lives. Just before it started to really start to feel good, Kenny told him to stop. "My turn." Shelly said as she grabbed for her brother's cock. She massaged it as she glided her hand up and down his hard boyhood. Just like his sister, ten seconds was barely time enough for too much fun, but he still maintained his smile. Afterwards, the horny siblings kissed each other on lips. Justin spun now and got a yellow. "Dare." Kenny answered. "I dare you to kiss each other on your penis and vagina." Justin decided to raise the bar. "No way!" Kimmy exclaimed. "That's dirty." "Come on, Kimmy." Kenny smiled. "We can wash first." "Fine." she relented after a moment to think about it. "But I still think it's gross." The both went into the bathroom together and cleaned themselves off. Coming back to the circle, Kenny went first and kissed his sister's pussy lips. He never imagined he would get even this far with his little sister, but here he was, his head between her legs. He gave Kimmy's bald lips a quick kiss as she jumped in surprise at how his mouth felt on her sensitive labia. Kimmy was smiling when Kenny looked at her. "Your turn. Kiss the very end of my penis." he told her. She hesitantly leaned over and got close to her brother's erect prick. She kissed the very tip of him. She gave him one more kiss for fun before lifting back up. Tomas spun next and got a yellow. This time, Kenny answered with a "Truth." "Do you ever play with yourself?" he asked. "Yeah." Kenny replied. "Sometimes." Kimmy answered, also adding, "But I don't always get a really good feeling when I do it." "You wanna learn?" Sherry offered. Kimmy looked over at her smiling friend, "Sure." she replied matching her grin. Joanne's turn was next. She spun a green. "Dare." Shelly said. "I dare Shelly to teach Kimmy how to masturbate." Joanne announced. "No time limit." "You want me to?" Shelly asked Kimmy. "Yes." Kimmy replied with a smile on her face. They moved the spinner and the girls got in the middle of the circle. "Can I kiss you first?" Shelly asked. "Yes." Kimmy agreed. Shelly leaned in and kissed her first lesbian kiss. Kimmy accepted this as a learning experience and allowed Shelly's tongue access to her mouth. A quick study, Kimmy was soon dancing her tongue with Shelly's in this preteen lesbian passion. "Damn!" Kenny said in amazement. "That is so hot!" They ended their kiss with Kimmy giving her brother a smile for his comment. "Lay down so I can teach you more." Shelly instructed her pupil. Kimmy tried to lay down, but found it uncomfortable to do so with the robe still on. She untied it from her neck and tossed it aside, laying back down with her head at her brother's legs. Kimmy looked up at her brother with a smile. "I can't wait to see you feel really good." Kenny smiled back at his sister. "It's all about where and how you touch yourself." Shelly explained. "At the top of your vagina is something called your clitoris." Shelly told her, bringing her fingers down to Kimmy's hairless lips. "It is very sensitive, Observe." Shelly brought her finger to Kimmy's slit and rubbed until she saw her clit. Delicately, she rubbed Kimmy's clitty eliciting a moan from Kimmy. "Here, feel it for yourself." Shelly took Kimmy's hand and guided it down to her own pussy, Kimmy felt where Shelly had touched and quickly found her clit. "Ooh!" Kimmy sighed as she was making herself feel better than she had felt before. But Shelly was far from finished. "It also feels good to put your finger inside your slit and just play around." Shelly removed Kimmy's hand and put her own back on her pussy lips, rubbing gently until she positioned her finger at the entrance to the hole. "Ready?" Shelly asked and with a nod of her head, Kimmy gave her the OK. With a little bit of pressure, Shelly shoved her finger into Kimmy's tight opening up to the first knuckle. Kimmy gasped with surprise at how it felt. Kenny looked down his sister's naked body and was glued to another girls finger inside of his sister's eight-year-old pussy. "Oh Kimmy! That looks so hot!" he said with lustful awe. "You want to learn how to make her happy" Shelly asked of Kenny. He looked shocked that she would ask him, but then agreed enthusiastically. "OK, push your finger in her slit right here." Shelly instructed Kenny, who was now admiring his sister's naked body from this side. He looked up at Kimmy's face. "It's all right. I want you to learn." Kimmy said to her brother. Slowly, he watched as Shelly removed her finger and watched as Kenny put his inside. "Don't go too far. She is still a virgin and has a piece of skin called the hymen blocking her insides. It'll hurt if it is broken." Kenny obeyed Shelly's instructions and now enjoyed the feeling of his finger buried to the first knuckle inside her pussy. "Here, while doing that, use your other hand to touch at her clit." Shelly showed Kenny where his sister's sensitive area was. Shelly closed her eyes, enjoying the amazing molestations by her brother. He kept it up for a few minutes before Kimmy had him stop. Although she didn't have an orgasm, she needed to catch her breath. After a little rest, the game resumed. Joanne spun a blue and looked at Joseph with a grin. "I dare you to make me have an orgasm." she was about to finish, but decided to add one more thing, "With your tongue." The other two non-incestuous couples both let out an "Eew" but Shelly giggled. "It is actually really fun." "My horny sister." Joseph laughed. First he kissed her on the lips before Joanne laid down on the floor and spread her legs. He leaned down and kissed his sister's hairless lips. The rest of the virgin audience was glued in to the scene. Soon, his tongue came out and he was licking at his twin sister's preteen cunny. Joanne reached down and spread her lips apart so that her brother could get his tongue inside. He shoved inside her slick, warm confines. "Yeah Joseph. You know I love this!" Joanne sighed. "You guys do this a lot?" Nina wondered. Joanne was in heaven and decided to give everything away. "Joseph and I do everything. We even have sex." She sucked in with an audible gasp as her brother was making her feel incredible. "Whoa! No way!" Kimmy called out. "We do, too." Sherry grinned. The two virgin couples just looked at their more experienced friends. "Prove it." Tomas dared. "You asked for it." Shelly said. "I guess the game is over." She laid on the floor with her legs spread and Justin knelt down between her legs. Four pairs of eyes watched as Justin pushed his cock into his sister's cunny. He slid easily into her bald pussy until he was completely buried inside his sister. "Crap!" Kimmy gasped, "How does it feel Shelly?" "It's the best feeling in the world." Shelly replied with a large smile on her face. "You and Kenny need to try it."Kimmy and Kenny looked at each other with large grins. "I want to do it, too." Nina said to her brother. "Shelly and I play with each other a lot and I have been thinking how to get you in on the action." "You've been lezzing with Shelly!?" Tomas exclaimed. "Damn girl, I never would have expected that from you!" "Yeah Justin, you should have told me you were having sex with your sister." Kenny said. "As much fun as it has been with you, I would have loved to have a girl." "You had me!" Kimmy said. "I wish I knew you were so interested in sex." Giving up on the dare, Joseph went over to Kenny and Kimmy. "You two want to have sex?" he asked them. They looked at each other, "Yeah!" the said together excitedly. "How about this. Kenny, you lay down." He followed instructions and they had Kimmy hover above his hard cock. Joanne took a hold of Kenny's cock, Joseph continued his instructions,"Now Kimmy, just lower yourself onto your brother's cock. It'll hurt a little at first, but believe me, it'll feel amazing after that." Kimmy cautiously squatted down, allowing her pussy lips to touch the head of her eleven-year-old brother's cock. She pressed down but was not able to get his older cock inside. "It won't go." she complained. "Just try harder." Joanne told her. "And relax. You're just tight, it'll open up soon." Kimmy followed Joanne and could feel something happening. Suddenly, she felt as her lips parted and the head of her brother's cock was buried inside of her pussy. Kimmy gave a sudden gasp feeling a cock inside of her pussy. She looked down at her brother, who was also amazed at the feeling. She looked over at Shelly, who was moaning with great pleasure as Justin's cock was plunging in and out of his sister. "Yeah Justin!" she called out, "I love this so much!" Her arms were hugging his waist and her hands were resting on Justin's ass, pushing him in on each stroke. Seeing just how great she could feel, Kimmy looked down at her brother's cock, his head up inside of her, and just shoved herself down on his cock. She felt part of her skin break, but it didn't hurt much. It was just a pinprick for a second before she could feel a new sensation, that of a cock buried in her previously virgin cunny. "I did it!" Kimmy exclaimed. "Oh Kimmy, this is the best feeling in the world." Kenny sighed. She leaned down and kissed her brother on the lips. "I love you so much." Kenny told his sister with such meaning. "You're the best brother in the world." Kimmy announced. "OK Kimmy," Joanne continued her instructions, "time to go up and down on his penis. That is what makes sex so good." She added, "It also feels good to still use your hands to touch each other a lot. Especially on her chest and nipples, Kenny." Kimmy raised up before falling back down on her brother's cock. Both siblings moaned with the amazing new sensations. Each stroke Kimmy took felt better than the last for both siblings. Kenny reached up and started to play with his sister's small nipples. Kimmy was being electrified. Every nerve on her body was reacting with such intensity that she felt like she was going to explode. She was bouncing faster on Kenny's cock, voicing every movement with a passionate grunt. Everything was equally incredible to Kenny as his boycock was being squeezed with each plunge his sister gave. Nothing he and Justin had done could compare to this. "Kimmy!" Kenny shouted as he could feel a building intensity within him. "Yeah..yeah..yeah!!!" Kenny was grunting as his orgasm was rising inside of him until finally, he shot his potent load into his sister's cunny. With the feeling of her brother's cum shooting inside of her previously virgin insides, Kimmy also came with a long squeal. Kimmy finally managed to relax, lying down on her brother's chest. They kissed on lips, two siblings who just lost their virginity to each other. Elsewhere in the room, Tomas and Nina were kissing with a newfound incestuous passion. "I want to be on top like Kimmy." Nina said to her brother. "Hold on." Joanne said, "Let's get you ready." She first went to Nina and started to lick her virgin pussy. "Oh yeah!" Nina sighed, "You're just as good as Shelly." Joanne got her pussy as wet as she could. She then went to Tomas, had him lay down, and sucked on his cock. "Ah!" he moaned as he felt this girl's warm mouth and tongue surrounding his cock. After a minute, she removed her mouth and told Nina to get into position. "I'll hold his dick in place and all you have to do is lower yourself on it." Joanne said to Nina. "You ready Tomas?" Nina asked her brother. "Absolutely!" he replied reaching up and touching at his sister's nipples. Nina grinned when her pussy was touching her brother's cock. "Here I go." she said as she started to lower herself on his cock. "Uhh!" she grunted as her brother's twelve-year-old cock was making its way between her lips. She had only ever had fingers inside of her pussy and now her brother's cock was sliding inside. In no time, she was sitting on her brother's hips, no sign of his cock. "Oh Nina! You did it! I'm all the way in you!" Tomas gasped, barely believing he had just lost his virginity with his nine-year-old sister. "When you are ready, pull off of him and push back on him," Joanne instructed. Brother and sister were looking into each others' eyes with a sexual gaze. "Do it." Tomas moaned at her. Nina lifted off her brother's cock a little before sliding back down. "Yeah!" Tomas shouted. Nina lifted and dropped down on her brother's cock slowly at first. "I love this so much!" Nina's cracked voice said to Tomas. "Touch each other." Joanne suggested. Tomas reached up and just rubbed his sister all over. She moaned as he touched her nipples. Her movements were deliberate as she slid up and down her brother's cock. "Damn it!" Tomas groaned. "I love you Nina! I love sex!" Every inch of his boycock was being massaged by his younger sister's pussy walls. Tomas could see an unfocused look on his sister's face but she was wearing a smile. She was enjoying it as much as he was. Gradually, she increased her pace on her brother. He brought his hands from her breasts to her hips and around to her ass. Tomas touched the his sister's clitty, sticking straight out where his cock was pushing on it. "Oh Tomas!" Nina called out as she felt the new sensation. She fell forward a little, her hands resting on her brother's chest and started to really move fast. Tomas was matching his sister's rhythm and was pushing up as she was pushing down. Nina was breathing fast as her orgasm was building up inside of her. "Nina! I..." he never finished his sentence as he shot his virgin load into his sister. She came as soon as she felt his sperm flood her pussy. "Yeah!" she called out in incestuous ecstasy. Her pussy was grasping at her brother's cock, milking every last drop of warm sperm out of him. She fell down onto his chest after her orgasm ebbed and the two shared another kiss. "Thank you." Tomas quietly said to his sister as they were coming off their sexual highs. "Thank you, too." Nina replied, rolling off her brother.