The house was empty except for us. Mom and Dad had left for the weekend, and my sister Jess, twenty-one and freshly home from college, was already three beers in when I got back from work. She was sitting on the couch in nothing but a thin tank top and panties, legs spread just enough to show the outline of her pussy lips against the cotton.
“Fuck, you look good,” I said, dropping my keys. No point pretending anymore. We’d been circling this for months.
Jess smirked and stood up. “Then stop staring and do something about it, big brother.”
I crossed the room fast. My hands went straight to her ass, squeezing those firm cheeks while I shoved my tongue in her mouth. She tasted like beer and need. I yanked her tank top down, freeing her tits, and sucked hard on one nipple until she moaned.
“Bedroom,” she panted.
We didn’t make it that far.
I bent her over the kitchen table instead, ripped her panties down, and spread her cheeks. Her asshole winked at me, tight and pink. I spit on it and rubbed my thumb around the rim.
“You ever had a cock up this ass?” I asked.
She shook her head. “Never. But I want yours.”
I dropped my pants. My dick was already rock hard and leaking. I pushed two fingers into her pussy first, getting them wet, then slid one into her ass. She was burning hot inside. Jess pushed back, taking it deeper.
“More,” she said.
I added a second finger and started pumping, stretching her while I stroked my cock with my free hand. When she was loose enough, I lined up and pressed the head against her hole.
“Relax,” I told her. “Breathe.”
The head popped in. Jess gasped, her whole body tightening. I held still, letting her adjust, then fed her another inch. Her ass gripped me like a fist.
“Fuck, you’re tight,” I growled.
I pushed deeper, inch by inch, until my balls rested against her pussy. Fully buried in my sister’s ass. I started fucking her slow at first, long strokes that made her whimper every time I bottomed out. Then I picked up speed, slapping against her cheeks.
Jess reached back and spread herself wider for me. “Harder. Fuck my ass like you own it.”
I did. I gripped her hips and pounded, watching my cock disappear into that stretched hole over and over. Her pussy was dripping down her thighs. I reached under and rubbed her clit in fast circles while I railed her ass.
She came hard, legs shaking, ass clenching around my dick. I didn’t stop. I kept driving into her, chasing my own orgasm.
“Gonna fill this ass,” I warned.
“Do it,” she begged. “Cum in my ass, brother.”
I slammed in deep and unloaded, pumping rope after rope of thick cum into her guts. When I finally pulled out, my load leaked out of her gaping hole and ran down her pussy.
We didn’t talk much after. Just cleaned up, ate, then went at it again that night in her bed—me on my back while she rode my cock with her ass until I filled her a second time.
By morning we both knew this wasn’t ending when our parents got home.
