Despite having his dick in her mouth, she found herself blushing. She found his words harder to deal with than the act itself, they felt more intimate somehow. Here was this man that she'd known her entire life, and she'd never known that this side of him existed. She was aware in an abstract way that he was attractive with his dark hair and dark eyes, but he'd always just been her brother. She complied, lifting up her but and sliding the soiled thong from between her legs. She tossed it somewhere into the depths of his room. It was going to be a bitch to find later but she wasn't too worried about it. She was finding it pretty hard to focus on anything other than the tingling between her legs and the hungry look in Jonah's eyes. Madison opens up her legs a bit wider, giving her brother a perfect view of her pretty pink pussy. The juicy flesh seems to glisten in the low light. She sinks her fingers into her tight cunt as she resumes sucking Jonah's dick. He was definitely enjoying the head, but as he watched Madison finger fuck herself on his floor, he found himself wanting something else.
"Fuck. Come here."
She blinks at him, doe eyes wide with confusion. He couldn't really mean what she thought he meant, right? Of course, he did mean exactly what she thought he meant. Using her surprise to his advantage, he pulls her off of the floor and into his lap, right onto his waiting hard on. He grinds against her and his dick easily slides between her folds, teasing her eager hole.
"Wait, wait, Jonah! This isn't what we agreed to," she tells him frantically.
She was soaked and had just been fingering herself in front of him, but this seemed like too much. As her mouth continues to protest, her body begins to rock against him. She shudders as his cock teases her entrance again. Jonah pays her words no mind, instead, he sets his attention to pulling her dress from her shoulders, revealing her perky tits. Her dress sat uselessly around her waist, pushed up to reveal her ass and pulled low to show off her tits. He took one of her rose bud nipples between his fingers and tugged at it until it drew to a stiff point. Ever gracious, he extended the same treatment to her other breast. How much time had he spent thinking about Madison's tits? She loved padding around their house in nothing but a tight threadbare t-shirt and tiny athletic shorts. Jonah understood wanting to be comfortable but pressed up against the thin fabric, he found her tits almost impossible to ignore.
"We can't. I'm not-."
"Just go with it, okay?" he finds himself telling her.
"Okay."
Just a few minutes ago, she'd marveled at the size of his dick and now it was right there, rocking against her waiting hole. Finally, the thick mushroom tip of his dick found its way into her entrance. She gasped at the intrusion and Jonah couldn't help but chuckle in response. With how wet she was, he found it quite easy to slide his whole length inside. The feeling of her tight walls around him was almost breath-taking. With his hands on her ass and waist, he begins to bounce her up and down on his dick. Madison doesn't think she's ever been so full before. Thrust after thrust, she just couldn't get enough of the sensation of him stretching her open. She slips a hand between their bodies to caress her lips, feeling where they are connected. She rubs slow circles around her clit but quickly speeds up, matching the pace of his thrusts.
She rests her head on his shoulder as he pounds into her. At first, the idea of kissing him is just too weird, but she gets caught up in the moment. As their lips lock, he finds he can taste the liquor that she had earlier. She finds herself moaning into his mouth and he continues his onslaught. He captures her lip in his teeth and she claws at his back, leaving ribbons of red on his skin. It didn't ever feel this good when she fucked her boyfriend or hooked up with people at the club. The knowledge was almost too much to bear. Sex this good was just down the hall? How were they supposed to do anything else but fuck each others brains out? They couldn't, though. It was just going to be a one time thing and she was going to live her life knowing that the best dick she'd ever experienced belonged to her older brother.
"Shit, I'm gonna cum," she mumbles against his lips.
"Do it," he orders her. " Cum on your brother's thick cock."
A few more thrusts and she finds herself falling over the edge into orgasm. Her whole body seemed to shake around him as he frantically continues to thrust into her, chasing his own orgasm. He finishes, shooting his seed deep into her unprotected cunt. They stayed like that for a while, his dick nestled deep inside of her. He had no clue if she was on birth control and he hadn't bothered to put on a condom, he hadn't exactly anticipated ending the night by fucking his sister.
Eventually, she got off of his lap and Jonah tucked his slick dick back into his boxers. She looks like she wants to say something to him, but he shoos her away so he can go back to bed. Somewhat dejected, she quietly pads back to her room. His cum leaks down her legs as she walks through the dark halls of their home. Madison didn't know why she felt so weird all of a sudden. It wasn't like he was ever going to cuddle her to sleep. What if their parents found them?
