He had her bent over the kitchen table before the front door even clicked shut. "Been thinking about this tight little cunt all day," Mark growled, yanking his sister's shorts down to her knees. At twenty, Lisa was still the same filthy girl who'd started sneaking into his room three years ago, and tonight she was already dripping.
Mark didn't waste time. He spat on his fingers, rubbed them over her swollen pussy lips, and shoved two inside. "Fuck, you're soaked. You been playing with yourself again?"
Lisa moaned and pushed back against his hand. "Couldn't stop thinking about your cock, big brother. Needed it bad."
He pulled his fingers out, wiped them across her ass, and freed his dick.
It slapped heavy against her thigh, already leaking. Mark lined up and drove straight in, burying every inch in one rough thrust. Lisa cried out, gripping the edge of the table as he started pounding her.
"That's it, take it," he grunted, hips slapping loud against her ass. "This is what you wanted, right? Your brother's cock splitting you open?"
"Yes—fuck, yes," she gasped. "Harder. Use me."
Mark grabbed a fistful of her hair and yanked her head back, fucking her like he hated her. The table legs scraped across the floor with every slam. He reached around and rubbed her clit in fast circles until her legs shook.
When he felt her pussy start to flutter, he pulled out. "Not yet. Get on your knees."
Lisa dropped fast, mouth open, eyes glassy. Mark stroked his slick cock right in front of her face. "You want my cum?"
She nodded, tongue out.
"Then open wide and don't spill a drop." He pushed past her lips and fucked her throat in short, deep strokes. Spit ran down her chin. When his balls tightened he pulled back just enough to say the words she always waited for.
"Tell her to swallow it," he ordered, voice rough. "Swallow every fucking bit."
Lisa moaned around him and did exactly that, throat working as he pumped thick ropes onto her tongue. She didn't let a single drop escape, licking him clean after he finished.
Mark hauled her up and kissed her hard, tasting himself on her mouth. "Good girl. Now get that ass upstairs. I'm not done with you yet."
