We were alone in the house again. Mom and dad had left for the weekend, and my sister Lisa was twenty-two, walking around in nothing but a thin tank top and panties like she wanted me to stare. I was twenty-four and hard as fuck the second I saw her nipples poking through the fabric. She bent over the fridge to grab a beer and I got a full view of her ass cheeks, the thin cotton riding up between them.
"Quit looking at my ass, perv," she said, cracking the beer open and taking a swig. But she didn't straighten up right away. She wiggled her hips a little, knowing exactly what she was doing.
"Fuck off, you're the one flashing it," I shot back, my cock already straining against my jeans. "You walk around like that on purpose."
Lisa turned, smirked, and pulled the tank top tighter across her tits. "Maybe I do. You gonna do something about it or just jerk off in your room again thinking about me?"
That was all it took. I crossed the kitchen in two steps, grabbed her by the waist, and spun her around. My hands went straight to her ass, squeezing hard. She gasped but didn't pull away. Instead she ground back against my bulge.
"You want this cock, don't you?" I growled in her ear. "Been teasing me for months. Say it."
"Yeah, I want it," she moaned, reaching back to rub my dick through my pants. "I've been wet thinking about my brother fucking me. Put it in me."
I yanked her panties down to her knees and shoved two fingers straight into her pussy. She was soaked, dripping down my hand. I finger-fucked her rough and fast while she bent over the counter, moaning like a slut.
"Harder, fuck, stretch my cunt," she begged. I added a third finger and she pushed back on them, her juices running down my wrist.
I pulled my fingers out, unzipped, and slammed my cock into her in one thrust. She was tight, hot, and perfect. I gripped her hips and pounded her right there in the kitchen, the sound of skin slapping skin filling the room. Lisa reached between her legs to rub her clit while I fucked her.
"Goddamn, your pussy feels better than I imagined," I grunted, driving deep. "You like your brother's dick ruining you?"
"Yes, fuck yes, don't stop," she cried. I slapped her ass hard, leaving a red handprint, then reached around to pinch her nipples through the tank top. She came quick, pussy clenching around me, her legs shaking.
I didn't pull out. I kept thrusting through her orgasm, then spun her around, lifted her onto the counter, and shoved back in. Her legs wrapped around me as I fucked her hard, tits bouncing with every slam. She pulled the tank top off and fed me a nipple. I sucked it rough while pounding her.
We moved to the living room couch next. She got on all fours and I took her from behind again, deeper this time, my balls slapping her clit. "Fill me up," she demanded. "Cum in your sister's pussy."
I lasted a few more minutes then unloaded, shooting thick ropes inside her while she fingered herself to another orgasm. Cum leaked out around my cock as I kept thrusting slowly.
We weren't done. After a quick break she sucked me hard again, taking my cock down her throat while I held her head and fucked her face. Spit ran down her chin onto her tits. Then she climbed on top, sank down on my dick, and rode me reverse cowgirl so I could watch her ass bounce and my cum still dripping from her.
"Talk dirty," she said, grinding her clit against me. "Tell me how wrong this is."
"Wrong as hell," I said, slapping her ass again. "Fucking my own sister, filling her cunt, making her my personal slut. You're never wearing panties around the house again."
She came again, screaming, then I flipped her onto her back and fucked her missionary until I pumped another load deep inside. We lay there sweaty and panting, my cock still twitching in her.
By the end of the weekend we'd fucked in every room. Shower, her bed, the garage, even bent over dad's desk. She let me use her mouth, her pussy, and eventually her ass after I worked her open with fingers and spit. Every time she begged for more, calling me her brother while I stretched her holes.
When our parents came home we acted normal, but the second they went to bed Lisa snuck into my room, climbed on top, and whispered, "Quiet this time, but don't stop fucking me." I covered her mouth with my hand while I drove into her again, both of us coming hard and silent.
That was just the start. Now whenever we're alone she pulls her panties aside and says, "Use your sister's pussy." And I do, raw, deep, and as many times as we can get away with.
