I came home from college for the weekend and found my sister Lisa in the kitchen wearing nothing but a thin tank top and panties.
She was 22, same as me, and we'd always been close, but lately things had changed. She bent over to grab something from the fridge and her ass cheeks spread just enough for me to see the outline of her pussy lips through the cotton. My cock got hard instantly.
"Fuck, Lisa, what are you doing?" I said, not bothering to hide the bulge in my jeans.
She straightened up and turned around, nipples poking hard against the tank top. "What? It's hot in here. Don't act like you haven't seen me in less." Her eyes dropped to my crotch. "Looks like you like it though."
I didn't deny it. "I've been thinking about you since last time. That night we got drunk and you let me finger you."
She smirked and stepped closer. "You mean when you made me cum all over your hand? Yeah, I've been thinking about that too. My pussy's been wet for days."
I grabbed her by the waist and pulled her against me. My hard cock pressed into her stomach. "Then stop teasing and show me."
Lisa dropped to her knees right there on the kitchen floor. She unzipped me, pulled my cock out, and wrapped her lips around the head without another word. She sucked hard, taking me deep until I hit the back of her throat. Spit ran down my shaft as she bobbed her head, gagging a little but not stopping. "That's it, suck your brother's cock," I growled, holding her hair.
She moaned around me, the vibration making my balls tighten. After a minute she pulled off, strings of saliva connecting her mouth to my dick. "I want you to fuck me. Right now. I've been waiting for you to finally do it."
We didn't make it to the bedroom. I yanked her panties down, bent her over the counter, and slammed into her pussy in one thrust. She was soaked, tight and hot around me. "Oh shit, yes," she moaned. "Fuck me hard. Use that cock on your sister's cunt."
I pounded into her, skin slapping loud in the quiet house. Her ass jiggled with every thrust. I reached around and rubbed her clit while I fucked her. Lisa pushed back against me, begging for more. "Deeper. Harder. Make me cum on your dick."
She came first, pussy clenching and pulsing, juices dripping down her thighs. I didn't stop. I kept slamming into her until I felt my own orgasm build. "I'm gonna fill you up," I warned.
"Do it. Cum inside me," she panted.
I buried myself to the balls and unloaded, pumping thick ropes of cum deep into her pussy. It overflowed and leaked out around my cock as I kept thrusting through the aftershocks.
We weren't done. Lisa turned around, kissed me messy and deep, then led me to the couch. She climbed on top, sank down on my still-hard cock, and rode me slow at first, then faster. Her tits bounced in my face. I sucked on her nipples while she ground her clit against me. "Tell me how good your sister's pussy feels," she demanded.
"Fucking amazing. Tight and wet and mine," I answered, grabbing her ass and spreading her cheeks so I could watch my cum-slick cock disappear inside her.
We fucked like that for what felt like hours, switching positions whenever one of us got close. Doggy on the floor, her on her back with legs over my shoulders, me sitting while she bounced on me. Every time I came she milked it out of me, and every time she came she screamed my name.
By the time we finally collapsed in a sweaty heap, the sun was setting. Lisa lay against my chest, my cum still leaking from her well-fucked pussy. "We can't tell anyone," she said, tracing circles on my stomach.
"No shit," I replied, already getting hard again at the thought of round two. "But we're doing this every time we're alone."
She smiled and wrapped her hand around my cock. "Good. Because I'm not done with you yet."
We spent the rest of the weekend exactly like that—raw, dirty, and completely addicted to each other. Every room in the house got used. Every position we could think of. And neither of us regretted a single thrust.
