We were both adults, me twenty-two and my sister Lisa twenty-one, when it finally happened. Our parents were gone for the weekend, and the house felt too quiet. Lisa walked into the living room wearing nothing but a thin tank top and panties, her nipples pushing hard against the fabric. She looked at me on the couch and said, “I’m horny as fuck and tired of pretending.”
I stood up, my cock already stiffening in my shorts. “Then stop pretending.”
She dropped to her knees right there on the carpet, yanked my shorts down, and wrapped her hand around my dick. “This is what I’ve wanted,” she muttered, then shoved it straight into her mouth. Her tongue worked the underside while she sucked hard, spit running down my balls. I grabbed her hair and fucked her face, driving deep until she gagged and pulled off gasping.
“Get on the couch,” I told her. She scrambled up, peeled off her panties, and spread her legs. Her pussy was shaved smooth and already wet. I dropped between her thighs and licked her in one long stroke, tasting how ready she was. Lisa moaned and pushed her hips against my mouth. I sucked her clit, shoved two fingers inside her, and pumped them fast while she cursed.
“Fuck, yes, eat that pussy. Make your sister come on your tongue.”
I kept going until her thighs shook and she came hard, juices coating my chin. She pulled me up, kissed me deep so she could taste herself, then turned around and bent over the back of the couch. “Put it in. Fuck me raw.”
I lined up and slammed my cock into her tight cunt in one thrust. She was hot and slick and gripped me perfectly. I grabbed her hips and pounded her, the sound of skin slapping skin filling the room. Lisa reached back and spread her ass cheeks so I could watch my dick disappear inside her.
“Harder,” she demanded. “Fuck your sister like you mean it.”
I gave her everything, driving deep and fast until sweat ran down my back. She reached between her legs and rubbed her clit, coming again with a loud cry, her pussy pulsing around me. I didn’t stop. I pulled out, flipped her onto her back on the couch, and shoved back in. Her legs wrapped around me and we fucked like animals, her tits bouncing with every thrust.
“Tell me you want my cum,” I growled.
“Fill me up,” she panted. “Shoot it deep in your sister’s cunt.”
I buried myself to the hilt and unloaded, pumping thick ropes inside her while she milked every drop. We stayed locked together, breathing hard, my cock still twitching in her soaked pussy.
After a minute she smiled up at me, lazy and filthy. “Round two in the shower. I want you to fuck my ass this time.”
We spent the whole weekend using each other exactly like that—on the kitchen table, in the parents’ bed, against the wall in the hallway. Every time one of us got hard or wet, we just took what we wanted. No guilt, just raw need finally satisfied. By Sunday night we were sore, sticky, and already planning the next time our parents would leave us alone.
