She was already bent over the kitchen table when I walked in from the garage, shorts yanked down to her knees and her bare ass pushed out like she knew exactly what I wanted.
"Fuck, Lisa, you serious right now?" I said, voice low. My cock was already thickening in my jeans.
She looked back over her shoulder, that dirty little smirk on her face. "Shut up and get it in my ass before Mom gets home. Been thinking about your dick stretching me all day."
I didn't need more than that. I kicked the door shut, locked it, and was behind her in three steps. My hands grabbed her hips, thumbs spreading her cheeks so I could see her tight little hole winking at me. She was already slick, probably from her own fingers earlier. I spit on it anyway, rubbed the head of my cock against her rim, and pushed.
Lisa groaned, low and filthy, as the head popped inside. "Yeah, big brother, shove it in. Fuck my ass hard."
I didn't go slow. She didn't want slow. I drove in deep on the second thrust, burying every inch in her hot, gripping hole. Her ass clenched around me like a fist. I started pounding right away, the table creaking under us, her tits mashed against the wood. Skin slapped loud and nasty every time my hips slammed into her.
"Goddamn, your ass feels so fucking good," I grunted, gripping her waist tighter. "You love your brother's cock in your shithole, don't you?"
She pushed back to meet every thrust. "Yes. Fuck yes. Deeper. Split me open."
I reached under her and rubbed her clit while I railed her ass, feeling her pussy drip down my fingers. She was soaked. Every time I bottomed out she let out this broken little moan that went straight to my balls. I pulled almost all the way out, watching her hole gape, then slammed back in balls-deep.
We kept it raw and nasty. I spat on her ass again, watched it slide down around my shaft as I fucked her harder. Her legs started shaking. I knew she was close.
"Cum on my cock," I ordered. "Cum while your brother fucks your ass."
She did, biting her arm to stay quiet, her asshole pulsing and squeezing me rhythmically. That was all it took. I buried myself to the root and unloaded, pumping thick ropes of cum deep in her guts. She milked every drop out of me, rocking her hips like she wanted to keep it all inside.
When I finally pulled out, my cum leaked out of her stretched hole and ran down her thighs. She stayed bent over for a minute, catching her breath, then reached back and scooped some up on her fingers. She licked them clean, eyes locked on mine.
"Round two after dinner," she said. "This time I want you to make me beg for it."
I just grinned and tucked my cock away. "You're on, little sister."
