Your sister suddenly bursts into your room, You were just laying in your bed as Olive quickly runs over to you and promptly sits on your crotch "Hello, brother~"

You can't help but grin at her as she leans down and places a kiss on your cheek before whispering "I want to fart on you, bro..." Her weight on you is already causing discomfort, but it doesn't stop the thrill running through your veins.

His chuckle is deep and husky as he replies, "You don't need to ask twice." Her brother is no less impressive than she had imagined; being on top of him, feeling his body beneath her, knowing that he can take everything she has... It only makes her farts seem all the more powerful. She closes her eyes and starts to push air from her nether regions, a slow, steady flow that eventually turns into full-blown ripping sounds as her sphincter fails to keep up with the demand. The hot, moist air washes over his cock and balls, causing them both to twitch in anticipation.

She lets out a quiet moan as he takes her roughly from behind; the intrusion feels good and tight, stopping the air from escaping quite so easily now. Instead, she focuses on controlling it, making tiny squeaks and sighs as she holds in farts while riding his cock deeper into her ass. Her cheeks puff up like little balloons with every straining breath, but she's determined to make this the best - and most gassy - experience for them both.

Her ass clenches tightly around his girth as he grows inside her, but she doesn't complain; if anything, it just adds to the thrill of being so full and stuffed with him... and gas. Her farts rattle in her chest like marbles caught in a box, desperate for an escape that refuses to come as easily now that his cock has claimed possession over her most private passageways. She grips tightly at the sheets beneath her, biting back moans as she tries not to cum from both pleasure and discomfort at once.

Her body arches with each powerful thrust, pushing her hips back into meet his every advance. The pain is exquisite; it's as if he's digging inside of her, stretching and tearing at her insides with the force of a tornado. With every contraction of her ass, she feels him grow harder still within her, threatening to split her open further still... but she doesn't care; all that matters is this feeling, this release of pent-up air and emotion as their bodies writhe together in ecstasy (or agony).

She lets out a sharp cry, gripping at his shoulders as the sensation builds to an impossible height...and then she feels it: her sphincter finally giving way, unable to contain another single puff of air. With a shuddering moan, she releases her fart, hot and humid and ripe with unspent desire... and as she does so, his cock throbs inside her, sending waves of pleasure coursing through her aching body like wildfire racing across a dry plain.

Her eyes roll back in her head as she collapses forward onto the mattress, spent and satisfied and barely able to catch her breath. The taste of him is still heavy on her tongue; she can feel his essence deep within her, marking her as his for the taking...and she knows that whenever he's close enough, she'll let him do it again, just so she can experience that same wild rush of power and submission once more.

Her back arches in pleasure as he pounds into her ass relentlessly, the feeling of his cock stretching and filling her over and over again sending waves of euphoria through every nerve ending. The heat building inside her grows until it becomes unbearable; she's on the brink, just about to come apart at the seams when he finally lets loose inside her, flooding her insides with his seed.

She cries out, overwhelmed by the intense sensations coursing through her body as his hips snap forward one final time and then still, leaving him buried deep within her. She lies there for a moment, feeling every tremor that runs through him as he catches his breath, before slowly sitting up, turning to face him. "That," she whispers hoarsely, "was...amazing." Her cheeks are flushed red from exertion and pleasure, her eyes gleaming with satisfaction.

Reaching out, she tenderly traces a finger along the line of his jaw before bringing it up to brush against his lips. For a moment, they stare at each other, both wondering what comes next...and knowing that whatever it is, they'll be ready for it together.

She leans in close, breath hot against his neck. "Don't worry," she whispers sultrily, nibbling gently on his earlobe. "I'll save my next one for you." With a playful wink, she slides off the bed and disappears into the bathroom, leaving him to wonder what sort of toxic delight she's about to cook up for their next round of fun.