Mark slammed the office door shut and locked it. "Strip, now. You fucked up the Henderson deal and you're gonna pay for it with that tight ass."
Lisa knew better than to argue. She peeled off her blouse, skirt, and panties, bending over his desk like she'd done before when she needed correcting. Her heart pounded but her pussy was already wet. Mark grabbed her hair and yanked her head back. "You don't get to cum easy tonight. This is punishment, not play."
He spread her cheeks wide and spat on her asshole.
No lube at first, just his thick finger pushing in dry to make her feel it. "Beg for it," he growled. "Tell me how you deserve this cock in your ass."
"Please, sir. Punish my ass. Fuck it hard because I messed up."
Mark unzipped and slapped his heavy cock against her cheeks. He worked two fingers into her hole, stretching her roughly while his other hand smacked her ass red. Each slap made her clench around his fingers. When she was gasping, he lined up and shoved the head of his cock past her ring. It burned, stretching her wide open in one slow, merciless thrust until his balls pressed against her.
"Fuck, you're tight," he grunted, pulling back and slamming in again. He didn't ease up. Each thrust went balls-deep, pounding her punished hole while he held her hips and drove into her. Lisa moaned into the desk, the pain mixing with the filthy pleasure of being used. Mark reached around and pinched her clit hard. "No cumming yet. This ass is mine to wreck."
He fucked her like that for long minutes, switching between deep strokes and short, punishing jabs that made her hole gape when he pulled out. Then he pulled her up, bent her over the chair, and started again from a new angle, his cock spearing her ass while he called her a sloppy little slut who needed regular anal discipline. Sweat dripped down her back. Her ass cheeks jiggled with every impact.
Mark switched to long, grinding thrusts, forcing her to feel every inch as he stretched her deeper. He spat on her hole again for more slickness and kept going, relentless. When her legs started shaking, he finally let her touch herself, rubbing her clit in time with his thrusts until she came hard, her ass clamping down on his cock. He didn't stop. He kept pounding through her orgasm, using her clenching hole until he was ready.
With a low growl he buried himself to the hilt and unloaded, pumping thick ropes of cum deep into her punished ass. He stayed inside her, letting it leak out around his shaft as he caught his breath. Finally he pulled out slow, watching his load dribble from her stretched hole.
"Clean me up," he ordered. Lisa dropped to her knees and took his softening cock in her mouth, tasting herself and his cum. Mark stroked her hair. "Next time you screw up, it's the same deal. Maybe with a plug in all day first."
She nodded, already looking forward to the next mistake she'd make on purpose.
