He had just gotten home from seeing a late movie with some of his high-school buddies. It was around one, and as he walked through the living room he noticed his younger sister Katie sitting zonked out in their father's recliner. It looked like she had fallen asleep while watching some old movie.

She was wearing an oversized T-shirt that she liked to lounge around in, and as Kevin went to turn off the television, he noticed to his surprise that she didn't] appear to be wearing anything else. Her shirt had risen up and her legs were slightly apart, and he could see a mysterious patch of darkness where he had expected to see the white flash of her cotton panties.

He became curious, and after turning off the TV, he decided to get a better look. Katie was a notoriously deep sleeper, and only the loudest of noises or the strongest of shakes could wake her up. So, Kevin had little fear of her awakening as he knelt down at her feet and brought his face to within inches of his sister's crotch. It was still too dark for him to see much of anything, so he reached out and carefully lifted the hem of her T-shirt, slowly exposing her neat little bush to his wide excited eyes.

He had never seen a girl's pussy up close before, he'd dreamed about it plenty, and fantasized a lot, but this was just too much! He lowered his gaze to her cunt lips, thoroughly entranced by the view.

He felt guilty that he was getting so turned-on by looking at his own sister's twat, but the sight of Katie's delicate little pussy in front of him was irresistible. Kevin suddenly had the urge to like her between the legs, he'd read about such things and she looked so inviting down there.

His head began to swim as he inched slowly forward until his lips brushed her tender slit. He froze as he felt Katie suddenly shift in her chair. She tried to move her legs closer together but his head was in the way, and her soft thighs squeezed it for a moment before she gave up and continued to sleep soundly.

Kevin waited for a few moments before he extended his tongue and ran it up the length of her moist pussy lips, gently unfolding and opening them with his tongue. Katie didn't move, so he began licking her with more boldness, slurping at his sister's tight slit with growing excitement.

He knew that he shouldn't be doing it, but it felt so natural that he couldn't have stopped even if he'd tried. He noticed that cock was throbbing and straining at the front of his jeans, and he felt slippery pre-cum ooze out, messing in his shorts.

Katie's body was beginning to respond to his eager licking and sucking. He felt her pussy-lips swelling and growing hotter as her twat became more and more inflamed, her juices starting to flow onto his probing tongue. He had no idea what he would say if she suddenly woke up, but he was getting too excited to care. She looked so sexy laying there with his head between her firm tanned legs.

He spread her legs open a bit further, giving him better access to her juicy box. He pushed his tongue deep inside her, his hands holding her hips steady in case she moved again.

Kevin's nose brushed something hard, and he explored upward with his open mouth, discovering his sister's exposed clit. He gently flicked it with his tongue, causing Katie to moan softly and thrash around in her slumber. After a few more licks, he sucked it into his mouth like it was a little cock, and she suddenly arched her back and groaned urgently, her body shud- dering as her pussy quivered against his mouth. He felt a flood of hot wetness on his chin, and realized that his sister had just climaxed, her tight little hole actually squirting some female come onto his lips.

Turned on beyond belief, he gave his jerking cock a few tugs through the material of his pants, greedily lap- ping up Katie's sweet cum as he blew his wad into his jeans. He continued sucking her until her slender body finally stopped trembling, then he shakily got up and pulled her shirt back down over her lap.

Katie slept on, a peaceful and contented look on her face. Kevin went up to bed, his head still swimming and his cock still stiff as an iron rod. He ended up having to jerk off again before he could go to sleep. As he drifted off, he hoped that his sister would be staying up late again soon.

---

The next morning Kevin was awakened by a painfully raging hard-on. The memory of sucking off his sister was still fresh in his mind. He knew it was a sin, but he wasn't sorry he had done it, and he would gladly do it again if he could. He and Katie had always been close, and though he had occasionally had a few dirty thoughts about her, it seemed that now he couldn't get her body out of his mind.

He slid out of bed and pulled on a pair of running shorts, then headed quietly toward his sister's room, wondering if she was awake yet. It was a Saturday morning, and everyone usually slept in late. Her door was slightly ajar, and he could see part of her bed through the crack. Katie was sleeping peacefully on her back with her knees drawn up, still wearing her T-shirt. He couldn't tell if she was still naked underneath, as the bed faced away from him.

Unable to resist the urge, he quietly tiptoed into her room, closing the door behind him.

Kevin slowly crept around the bed until he could see his sister's naked butt. YES! She hadn't put any panties on, and he drooled at the sight of her bare, delectable snatch, and the round, firm cheeks of her sexy fifteen-year-old ass.

Almost instinctively he crawled onto her bed and planted his face right in her crotch, lifting her slender legs up and draping them over his shoulders. He rubbed his nose through the sweet-smelling patch of short blonde hair on her mound, and then began kissing her smooth slit lovingly as he ran his hands over her curvy hips and flat stomach.

He slurped eagerly at her swollen labia for a minute or two, then placed his index finger at her opening and pushed gently, her slick hole almost sucking it inside. Her pussy felt very tight, but it was also unbelievably hot and slick. Kevin ached to find out what it would feel like around his throbbing cock. He decided that he just had to find out. He wasn't thinking about the consequences, or about what Katie would think if she woke up. The only thing Kevin was thinking about was fucking his sister, the feeling of his dick buried deeply in her hot moist twat.

He knelt back, Katie's legs falling off his shoulders and onto the bed as he squirmed out of his shorts, leaving him completely naked. His dick wasn't huge, but it was a respectable size for a teenager, and it was jerking excitedly at the prospect of being buried in his sister.

Kevin moved forward and spread her legs further apart. He touched the head of his dripping cock to her pussy, gasping as it slid deliciously over her smooth cunt lips. He barely had to push and the head disappeared, lodging neatly in her hot slippery tunnel.

Katie moaned underneath him, and he pushed again, feeling more and more of his dick being swallowed by her wet pulsating inner flesh. Finally, with a grunt of pure ecstasy, his balls came to rest snugly against the soft cheeks of her ass.

He held himself there for a moment, savoring the incredible sensation of her tight pussy totally en- gulfing his cock. He looked down at his sister's innocent sleeping face and slowly began to move his hips, pulling the full length of his cock in and out of her. After only a few strokes, he heard her cry out, and for an instant Kevin froze, fearing that he had hurt her somehow. Then her vagina convulsed around his cock, and he realized that she was cumming!

Kevin kept his prick balls-deep inside her as her pussy squeezed and milked him. He felt his nuts begin to tighten, and though he desperately wanted to come inside of her, his better judgment prevailed and he quickly pulled out. A split-second later, his cock jerked and squirted a huge wad of cum which landed on the front of his sister's shirt. It jerked again, and fired a second, even bigger gob when landed square on Katie's mouth. His prick continued to twitch and spurt until his balls were drained, the final spurts landing on her blonde bush and dribbling over her swollen cunt lips.

He swayed over her for a moment, recovering from his orgasm. There was something incredibly sexy about the way his pearly-white goo looked on his sister's chin and lips. He moved up and smeared it around a little on her face with his finger as she continued to sleep, apparently oblivious to what had just happened.

Finally gaining his reason, Kevin quickly ran to the bathroom to get a towel, and cleaned her up thoroughly, even licking the last traces of both of their cum off of her pussy.

Before he left, he kissed her tenderly on the mouth, her soft lips still sticky from his sperm. Then he went back to his room and dozed off -- a contented smile on his face.

The End