Note: This story was dynamically reformatted for online reading convenience. Sleepover by Overtime Prologue John threw his book bag on the bed and hurried over to the window. He took his cock out of his pants and began pumping his meat furiously. Because his sister Megan and he rode the same bus home from school, he knew that she was only a minute or two from coming down the road with her friends. He often outpaced her coming back from the bus stop, she dilly-dallying and choosing to be dropped off at the next stop--perhaps because she didn't want to be associated with her geek brother. John had just turned 15, and his sister, a year behind him, had started her freshman year of high school about six months previously. Although she was a bitch and seemed to think she was the Queen of Sheba, he had to acknowledge how good looking his sister was. She and her friends came into sight and John's cock began to harden up as he pumped his rod faster. He knew that he wouldn't be able to finish in time before they made it close enough to detect his shadow behind the blinds, and he would not risk getting caught. However, this was a ritual he was compelled to perform whenever they came home together on the bus. He saw his sister's tits bouncing lightly against her blouse, a white bra containing them and slightly visible through her light colored clothing--an effect no doubt intentional. His eyes scanned over to the right to where her punk friend Suzy was laughing and carrying on about who knew what. Yea, she was hot too. Her animated conversation had her turning around to face his sister and their other friend Beth as they walked toward the house. John reveled in her tight ass as it swayed and bounced. The trio paused at a telephone pole in front of the house next to the hedge that separated their yard from the neighbor's. Beth had just gotten a call on her cell phone, and it seemed that Suzy's tale had been interrupted. John continued to stroke his manhood while gazing at his sister friends. His sister appeared to have stepped over to Beth's right, out of eyeshot due to the hedge wall. Suzy must have gotten hot because she decided to take off her leather jacket. She was wearing only a tight white tank top with no bra, and John nearly lost his mind. His stroking increased, and he was so mesmerized by Suzy's chest that he had not heard his sister enter the house from the back sliding glass door. Just as he began to shoot his load, coming in great gobs all over his hand and slightly on the Venetian blinds and the wall, his sister walked past his open door. She saw the cock explode in milky white cream and she gasped audibly. John turned, and his face reddened to crimson. His knees were already wobbly from his powerful orgasm, and now he felt like he might faint. He just starred at his sister, his cock still in his hand, covered in hot come. She saw the expression of terror on his face, and she was completely lost for words. Her face had reddened slightly too. After a moment, she turned her head and walked toward her room, her steps became shorter as she felt a warm moist spot that had gathered between her legs. She let out a heavy sigh. He thought the room was going light and dark, and the blood pounded in his head. Hearing her throw down her book bag in her room, this was followed by a few steps, and the front door opened and closed with a slam as she exited the house. "Shit, oh shit, oh shit, oh shit," John said out loud. He had been completely busted, and humiliated. He sat down on the side of his bed and tried to recover. John was a true bookworm. Having no friends to speak of, he immersed himself in his schoolwork--going far beyond what the teachers expected of him. Oftentimes in class he knew the answers, but he chose to keep that information to himself, so as to not stand out. He worked his ass off on the projects he chose to pursue. After he gathered his breath and cleaned himself up, his terror began to be replaced more by anger. He worked his ass off at school, and bitches like his sister got away with whatever they wanted to do. As much work as he put into his studies and around the house, he didn't deserve to be humiliated by the likes of her. He pictured her now talking to her friends outside and all of them laughing at him over what had just happened. He began to get furious, but deep down he was still very scarred and very shaken up. He glanced back out the window, but his sister's two friends were not laughing at anything. He saw his sister wave goodbye to them, and then he heard her re-enter the house. She went to her room, and he could hear her sit down on her bed. He also sat on his bed. He didn't know if he should confront her or what he was even going to say about all this. He heard his sister shuffle around on the bed, but all else in the house was quiet. He got up and walked down the hall to his sister's room. What he saw amazed him. His sister had pulled off both her pants and her underwear. She was rubbing her clit in tight circles with the index finger of her right hand. When she saw John come down the hall toward her doorway, she did not stop, and she began to squeeze her breasts through her shirt with the other hand. She moaned softly and increased her rhythm, humping forward on the bed. Suddenly as she arched her back she let out a cry and then lay back down softly on the bed, catching her breath. Her brother just starred. His cock had gotten instantly hard again while watching his sister masturbate. His cock twitched and spasmed inside his pants and some come from his previous orgasm leaked out, coating the head and feeling warm inside his underwear. His sister took in the bulge in his jeans with glazed eyes. Somehow her erotic display had not sated her any more than her brother. She had never been so turned on as when she had seen her brother's cock explode before her eyes as she walked by his room. Her panties had become instantly soaked. She had been unable to resist the urge to masturbate, something she did only rarely in the shower. She had gotten rid of her friends so as to explore the feelings that had awoken inside. "Did she lust after her brother?" she had asked herself. "Or was it just that she had been exposed to an erect penis?" She couldn't even ask herself these questions without the moisture seeming to increase and the need to touch herself grow. She didn't know what to make of the silence in the house. She knew her brother must still be in his room. She listened for him, but not hearing anything, she had been unable to do anything but to lay down on the bed and remove the clothing that was in her way to rub her pussy with her hand. When she had looked up and felt his eyes on her body, she had begun frigging herself even faster and then had the most powerful orgasm she had yet achieved. She even wondered if her experiences in the shower could even be called orgasms compared to the feeling she now embraced. She saw the bulge in his pants and licked her lips. She said in a husky voice, barely able to speak, "Why don't you take that out. I want to see it." She licked her lips. John was feeling weak in the knees again, and his whole lower body was shaking. He just starred at his sister and looked down at the bulge in his jeans. His cock was so hard that it hurt, but he didn't know what to do. His body and his brain had become separated. It was Megan that scooted forward, up toward John's bulge. Her small hands lightly brushed across his crotch. Then she lifted up the material to find his zipper. She smoothly pulled it down and a portion of John's underwear was visible. She lightly traced the exposed portion of his underwear with her fingers. She gently tickled his manhood with her fingertips. Finding the pole, she inserted her hand into the zippered opening of his jeans. With her other hand she unclasped the button. More of his underwear was exposed, and she gripped his cock with her one hand as her other worked to slide his jeans down his legs. John just stood there mesmerized, but he managed to help her and was able to step out of his jeans. She continued to stroke his cock up and down through his underwear. John's breathing became faster, and he gazed deep into his sister's eyes as she looked up at his face, still stroking his rock hard monster. John's faculties began to return to him, and he remembered how only moments ago he had been so angry. He had intended to confront his sister and take charge of the situation. As he felt his sister's small hand move up and down on his manhood and as he watched her pretty face look up at him, the anger part directed his next actions. With both hands he grabbed his underwear at the waist and pulled it down and completely off. His sister removed her hand momentarily to watch him disrobe, but she gripped his cock again, exploring the texture and shape, smoothing the traces of still wet come over its surface. John pushed his groin closer toward her head and began directing his erection toward her mouth. Megan truly didn't know what to do. She had never touched a penis, much less sucked on one, but she decided not to back down from this moment even though she felt trepidation at the hard dick coming toward her face. John reached his hand out and pushed his index finder between her red lips. Instinctively, she opened her mouth. He thrust his hips toward her and pressed the head of his cock forward. As the cock entered her mouth, it tasted salty and felt warm. Her saliva began to flow. John began thrusting lightly and slowly a half an inch of the head into and out of her mouth. She tasted his cock and swallowed her spit. "Yes, suck it." John moaned. "Please, Megan,please suck it." She allowed a bit more of the phallus into her mouth. The entire head entered this time, and she felt the shape of it inside. She rolled her tongue around on the cock and John thrust deeper. Her mouth felt really good. It was hot and wet. Some drool rolled down the side of Megan's jaw and hit the floor. John thrust back and forth with his hips, fucking her mouth slowly. As he moaned and enjoyed the sensations, climbing back toward a power orgasm, he looked down at the exposed portions of her lower body. He bucked into her mouth while picturing what it would feel like to thrust his huge, hard cock into her wet pussy. As she sucked him, the image became a powerful one, and he got harder and bigger. She was finding it difficult to keep the cock in her mouth as his dick had grown and his hips had swayed more and more unevenly. She tried to slow the pace, but he only grunted and forced more of his dick into her mouth. Finally, he had had enough of fighting with her teeth. In a frenzy, he reached down and grabbed her by the thighs. He pulled them towards him and her upper body fell back onto the bed. Her cunt was exposed, and she moved her hands down to cover herself. She hadn't realized yet his intention to ram his hard cock up inside of her. She believed he was merely at the point of another orgasm and wanted to see her pussy as he came. She reached for his cock to stroke the come onto her thighs, but instead he grabbed both of her hands with one of his. With the other, he positioned his cock at the entrance to her vagina. As she screamed, "No, John!" He penetrated her, thrusting up as far as he could then retreating and thrusting up again. Her body spasmed when he first shoved his cock into her. The violation was at first painful, but then exhilarating. She gasped and arched her back as he thrust in again. However, when he was able to attain a certain depth, she felt a though her pussy had been ripped apart. The pain was intense, and her eyes swelled with tears. Still John kept thrusting, riding his hips in and out of her. His cock was huge and hard, but for a minute or more all she felt was sheer agony. She looked up at his face through her tears to see the look of concentration and then the look of ecstasy as he ground his rod all the way to the hilt and exploded into her, pumping her for all he was worth. In the end, his cock had started to feel really great, and when he exploded inside of her with such force and with such mobility from his hips, she had almost come again. Although when he withdrew his cock and collapsed beside her on the bed, she felt the pain in her groin and she saw the blood on the bedspread. She had just lost her virginity, and she had been de-flowered by her own brother. More than that, he had come inside of her. What if she got pregnant? Megan didn't know. She hadn't known what to expect, sex being new to her an all, but her brother had really turned into something else entirely. He scarred her now, yet she was also somehow excited by it. It was something unpredictable and powerful, and toward the end it had felt so good--if only she had had just a little bit more. Without making eye contact with him, Megan headed into the bathroom for a shower, locking the door behind her. Her brother simply retreated to his room. He had never had an orgasm that powerful, and somewhere in his mind he was convinced that was justification enough for his actions.