She was bent over the couch looking for the remote when I walked in from the shower, towel around my waist. My sister Jess, twenty, tight ass in those tiny shorts, no bra under her tank top. We were alone for the weekend, parents gone. I told her to move. She laughed and wiggled her hips instead, calling me a perv. My dick got hard fast. I grabbed her hips to pull her out of the way and she pushed back, grinding right on me. The towel dropped.
“Fuck, stop,” I said, but my cock was already sliding between her thighs. She was wet. She didn’t have panties on. Jess moaned and reached back, lining me up without thinking. I shoved in raw. No condom, no plan, just sudden tight wet heat around my dick. She gasped and started fucking back like she’d been waiting for it.
We didn’t talk. Just raw thrusts, skin slapping, her cunt gripping me every time I bottomed out. I tried to pull out after a minute but she reached back and held my hips. “Don’t stop, just keep going,” she panted. I slammed harder, balls slapping her clit. Sweat ran down my chest.
Her shorts were still on, just pushed aside. My cock was shiny with her juice every time I pulled back.
I felt it building fast. Too fast. I told her I was close and tried to yank out again but she slammed her ass back and locked her legs. My load shot straight into her pussy, thick ropes pumping deep while she kept grinding. I could feel every spurt filling her up. She came right after, cunt pulsing and milking the rest out of me. When I finally pulled out, cum leaked down her thigh in a white streak.
Jess turned around, face flushed, and looked at the mess. “Shit, you came inside me.” Her voice was raw. She reached down, scooped some on her fingers and licked it off without breaking eye contact. My dick twitched again. I pushed her onto the couch, spread her legs and shoved back in, fucking the fresh load deeper. She wrapped her arms around my neck and whispered dirty shit in my ear about how full she felt.
We kept going. I flipped her over, fucked her doggy again, then on her back with her legs over my shoulders so I could watch my cock stretch her. Every time I got close she’d lock her ankles and hold me in. Second load went even deeper. By the third round she was dripping, sheets soaked, both of us covered in sweat and cum. She rode me reverse, ass bouncing, reaching back to spread her cheeks so I could see everything.
When I finally pulled out for good my cum poured out of her in a steady stream. Jess just lay there breathing hard, fingers playing in the mess between her legs. “We’re fucked,” she said, but she didn’t sound sorry. I lay beside her, dick still half-hard, and slid two fingers into her sloppy cunt, feeling how much I’d pumped in there. She came again around my hand, hips jerking.
We didn’t move for a long time. The room smelled like sex. Her shorts were ruined. Mine were on the floor. She eventually got up, cum still running down her leg, and headed for the shower. I followed. Under the water I bent her over again and fucked another load into her, slow and deep this time, no rush. She pushed back every thrust, taking it all.
Later we sat on the couch eating pizza like nothing happened, but every time she moved more cum leaked out and stained her fresh shorts. We both knew it wasn’t an accident the second time, or the third. The first one just opened the door. She looked at me and smirked. “Round four after we eat?” I didn’t answer. I just reached over and shoved my hand down her shorts, feeling how wet and used she still was. She spread her legs wider and went back to her slice.
We spent the rest of the weekend naked and fucking. Every position, every hole she’d let me use. I came in her pussy more times than I could count. She never once asked me to pull out. By Sunday night she was walking funny and her stomach looked slightly swollen from how much I’d dumped in her. We didn’t talk about what would happen when our parents got home. We just kept going until we couldn’t move anymore, bodies stuck together with dried cum and sweat.
When the front door finally opened we were on the living room floor again, me balls-deep and pumping another load while she bit my shoulder to stay quiet. We froze. The risk made it hotter. Jess clenched around me and I emptied everything I had left. She smiled against my neck. “Accident’s already happened,” she whispered. “Might as well finish.”
