Dylan froze. His cock was buried deep in his sister's throat, and she jerked her head back, coughing and gagging. His dick thrust straight out, grazing her cheek, leaving a smear of saliva and precum across her pretty face. He was staring at Tom. "Dude, I can't fuck my own sister."
"What do you think you're doing now?" Tom pulled his fingertip out of Shawna's ass and got up off the bed. He pushed his way past Dylan and thrust his half-erect cock into the naked girl's mouth. She sucked it automatically. Tom indicated her vacant backside with a dramatic sweep of his hand. "She's all yours."
Wordlessly, Dylan backed away from his sister's face. He watched for a moment, dumbfounded, as she cleaned the older man's dick. When he pulled it out of her mouth, it was slick with saliva. Shawna didn't say anything. She only looked up at him, and Dylan saw the same mixture of lust and confusion on her face.
That seemed to decide it. He got behind her on the bed, the video camera still in his hand. He stared for awhile at her backside, taking in the shaven pussy with its tidy outer labia and, above it, the red pucker of her asshole, wet with cum. Dylan's cock had never been so hard. When he placed it against his sister's anus, he groaned. "Oh fuck, I can't believe I'm doing this."
When she turned her head to look at him and let out a soft moan, he nearly exploded across her asscheeks. He had always wanted to fuck her, although he hadn't understood that until recently. He had always thought it was her friend Daisy that he wanted, the one with the killer tits and tight little body. And he did want her, had fucked her, had cum in her mouth. But he loved his sister, and he loved the way she acted when Daisy was around. She became more relaxed, more flirtatious, more fun. She wore more revealing clothing, skimpier swimsuits and, when their parents weren't home, sometimes walked around the house in a pair of panties and a t-shirt.
It was on one of these occasions that he had burst into the bathroom to find Daisy there on the toilet, emptying her bladder of the wine she had drunk that evening with his sister. He had only wanted to find a private place to jerk off, but when he saw the pretty blonde sitting there, he had coaxed her into giving him a blowjob. She had clearly never given one before, but she was eager, and it hadn't been terrible. She had played with his balls a little, which was nice. Unskilled or not, it didn't matter. Dylan wasn't thinking about her anyway. He was imagining his sister, sliding her boyshort panties down the perfect globes of her ass, reaching back to spread them so he could see her pussy and asshole. When he came in Daisy's mouth, he nearly moaned his sister's name. Mentally he was cumming deep in her perfect ass.
And now he was pushing his cock into a tight little asshole more perfect that he could have dreamed. She opened for him, albeit reluctantly, until his head slipped past her sphincter. She spasmed involuntarily around his dick, and the feel and sight of it drove him crazy. "Oh fuck, Shawna," he moaned. "I'm going to bury my cock in your perfect little ass."
With one hand gripping a round globe, he began to work himself inside her. He went slowly but steadily deeper and deeper, the sounds of his sister's ragged breathing and occasional grunts and groans only urging him on. Even when she began to protest, squealing that his cock was too big and she couldn't take any more, Dylan continued. He knew he would cum if he thought about what he was doing, so he focused on getting the right camera angle, making sure he spread her cheeks wide enough to reveal her anus wrapped around his cock.
When he was as deep inside her as he could get, Dylan paused and let her catch her breath. As much as he wanted to destroy this ass, he loved Shawna, and didn't want them to fall out afterwards. Somewhere inside him, he wondered at his ability to plan and reason, even with his cock balls-deep inside his sister's ass.
And then it hit him. He was inside his sister's ass. He looked up and saw her looking back at him once again, and the expression of lust on her face was so fucking sexy he had to hold himself back from cumming. He thought he might have even squirted a little cum inside her, but he clamped down with an iron will. He was going to enjoy this. He began to fuck her.
Shawna immediately groaned. "Oh fuck, Dyl, oh fuuuck, Dyl, oh fuuuuuuuck..."
He saw her rake the pillow beneath her with her long nails, painted that pretty ocean blue he liked so much. He could feel her bowels clenching all along the length of his cock, as if she were trying to suck the cum out of him. She squirmed, writhing on the bed in front of him. He could smell her pussy now, her beautiful pussy, his own sister's cunt. Dylan released her asscheek and reached down to touch her. She was velvety soft and slippery wet. He hadn't even put his fingers inside her and he could feel her wetness. He was turning his sister on. She was enjoying this.
His fingers found her clit and began to tease it as best he knew how. He wanted to make his sister cum. Even so, he knew if he continued to fuck her, he was going to explode inside her ass in a matter of minutes. Fuck, at this point, he was lucky if he lasted a few more seconds.
His luck ran out when Shawna looked back over her shoulder and moaned, "Fuck my ass, Dylan. Oh god, fuck it hard like you would my pussy."
Dylan managed three hard thrusts and then he was cumming inside her. He moaned her name again and again as he filled her ass with his cum, gritting his teeth with the force of it. She moaned along with him, urging him on, saying how sexy he was and how much she loved his cock in her ass and other things he barely heard.
-
No one bothered to dress much for dinner. They sat around the breakfast bar on tall stools, Dylan in boxers, Tom in briefs, and Shawna in her stockings and heels. One of her thigh-highs had slipped free of its garter strap and clung to her lower thigh. The narrow satin strap hung between her carelessly spread thighs. A pool of semen was collecting on the stool beneath her ass.
The three of them ate pizza and chatted. Tom hadn't expected everyone to be so friendly after their encounter, but it seemed the siblings had grown closer since their encounter. Or perhaps they were just too hungry and exhausted to argue. He watched Dylan's eyes drop frequently to Shawna's tits, and sometimes he seemed to position himself so he could sneak a peek between her thighs. If Shawna was aware of it, she didn't show it. Tom fancied she rather liked the attention.