We were both trashed by midnight. The family reunion had dragged on too long, the whiskey flowing faster than the conversation. I was twenty-four, home from the city, and my sister Lena was twenty-two, still living with our parents in the old house. She cornered me in the kitchen after everyone else crashed, her eyes glassy, her tank top slipping off one shoulder.
"Fuck this party," she slurred, pressing her body against mine. "Come upstairs. I want to show you something."
I followed because the booze made every bad idea feel perfect. Her room smelled like perfume and sweat. She locked the door, shoved me onto the bed, and climbed on top. Her mouth tasted like rum when she kissed me hard, tongue sloppy and hungry. Clothes came off fast—her shorts yanked down, my jeans kicked away. Her tits were small and perky, nipples already stiff. I sucked one while she ground her wet pussy against my cock.
"God, I've wanted this forever," she muttered, reaching down to stroke me. "But tonight I'm too fucked up to care."
She flipped onto her stomach, ass up, reaching back to spread her cheeks. "Do it. Fuck my ass. I've never let anyone before."
I didn't ask twice. Spit on my hand, rubbed it over my cock, and pushed against her tight hole. She was drunk enough that she pushed back instead of tensing. The head popped in with a wet sound. She groaned loud, face buried in the pillow. I kept going slow at first, then deeper, the heat gripping me like a fist. Every thrust made a filthy squelch. Her ass cheeks slapped against my hips as I picked up speed.
"Fuck, harder," she begged, voice thick. "Stretch my ass, big brother. Use it."
I grabbed her hips and pounded. The bed creaked. She reached between her legs to rub her clit, fingers sloppy from how soaked she was. I could feel every inch disappearing into her, the ring clenching and releasing. Sweat dripped down my chest. She kept talking dirty, words slurring together: "Deeper… fill my ass… don't stop."
I pulled out once to spit again, watching her hole stay open for a second before I slammed back in. She came first, body shaking, ass pulsing around me while she moaned into the mattress. I followed right after, burying myself to the balls and pumping cum deep inside her. It leaked out around my cock when I finally pulled free, thick and white against her red skin.
We collapsed in a heap, breathing hard, the room spinning from the alcohol. She turned her head, gave me a lazy, satisfied grin. "We can't tell anyone. But we're doing this again tomorrow when we're still hungover."
I nodded, already half-hard again at the thought. The house stayed quiet around us.
