The hotel room door clicked shut behind them, the heavy thud echoing like a final warning neither wanted to hear. Mark, thirty-two and broad-shouldered from years of construction work, dropped his bag and stared at his younger sister Lisa. She was twenty-eight now, all curves and long dark hair that fell over her shoulders in waves. They had grown up sharing everything except this raw hunger that had been building since their parents’ divorce pulled them back together for the family reunion.
“Fuck, Lisa,” he growled, voice low and rough. “We shouldn’t be doing this here.”
She stepped closer, her tight dress hugging every inch of her body, nipples already hard against the thin fabric. “Shut up, big brother. We both know why we booked the penthouse instead of separate rooms. I’ve been wet since the flight thinking about your cock.”
Mark grabbed her waist and yanked her against him. His mouth crashed down on hers, tongue pushing deep as his hands slid under her dress and gripped her bare ass. No panties. She had planned this. His fingers found her slick folds and he shoved two inside without warning, pumping hard. Lisa moaned into his mouth, grinding down on his hand.
“Goddamn, you’re dripping,” he muttered against her lips. “Been saving this pussy for me?”
“Only yours,” she panted, reaching between them to squeeze his thickening shaft through his jeans. “Get these off. I want to taste you.”
They stripped fast, clothes hitting the floor in a messy pile. Mark’s thick cock sprang free, veined and heavy, the head already glistening. Lisa dropped to her knees on the plush carpet and wrapped her lips around him, sucking him deep in one greedy motion. Her tongue swirled the underside while she bobbed, taking him to the back of her throat until she gagged and spit ran down her chin.
Mark fisted her hair and fucked her mouth, hips snapping forward. “That’s it, sis. Choke on your brother’s dick. You love this dirty shit.”
She pulled off with a wet pop, strings of saliva connecting her lips to his cock. “Fuck my face harder. Then bend me over that balcony railing and pound me where anyone could see.”
He hauled her up, spun her around, and bent her over the wide leather couch facing the floor-to-ceiling windows. The city lights glittered below. Mark spread her ass cheeks, lined up, and slammed into her soaked cunt in one thrust. Lisa cried out, pushing back to take every inch.
“Shit, you’re tight,” he snarled, gripping her hips and driving into her with brutal strokes. The wet slap of skin filled the room. “This pussy belongs to me now. Say it.”
“Yours,” she gasped, fingers clawing the cushions. “My brother’s cock owns this cunt. Don’t stop.”
He reached around and rubbed her swollen clit in fast circles while he fucked her. Lisa came hard, walls clenching around him, juices coating his balls. Mark didn’t slow down.
He pulled out, flipped her onto her back on the couch, and shoved back inside, legs hooked over his shoulders so he could pound deeper.
Sweat slicked their bodies. Mark leaned down and sucked one nipple into his mouth, biting just enough to make her yelp and clench again. “Gonna fill you up,” he warned. “Breed this forbidden pussy right here in this hotel room.”
“Do it,” Lisa begged, nails raking his back. “Cum inside your little sister. I want to feel it leaking out of me all night.”
Mark’s rhythm faltered. He buried himself to the hilt and exploded, hot pulses flooding her depths. Lisa came again with him, milking every drop. They stayed locked together, breathing hard, the city lights painting their skin.
Later they moved to the king bed. Mark ate her out slowly at first, tongue lapping their mixed cum from her folds, then faster until she screamed his name into the pillows. She rode him next, tits bouncing, ass slapping his thighs while she demanded he call her his dirty little sister whore. They fucked until the sun rose, switching positions on every surface—against the shower wall, on the desk, even on the floor when the bed felt too tame.
By checkout time their bodies ached in the best way. Mark pulled Lisa close in the elevator, whispering what they would do the next time they “accidentally” booked the same hotel. She smiled, already planning the next forbidden night.
