The front door slammed shut behind him, and Mark knew he was in trouble the second his mothers voice cut through the hallway. Upstairs. Now. At nineteen he was supposed to be too old for this shit, but the tone in her voice left no room. He dropped his bag and climbed the stairs two at a time.

She was already in his room, holding the small pink shopping bag he thought he had hidden. Strip, she said, voice low and flat. He opened his mouth to argue but she stepped closer, fingers already working his belt. I said strip, or I do it for you.
Clothes hit the floor in a messy pile. She pulled a pair of sheer black panties from the bag and held them out. Step in. His face burned but his cock twitched anyway. She noticed, of course. A sharp little smile touched her mouth as she tugged the panties up his thighs and over his hardening dick, the fabric stretching tight.
Next came the matching bra. She fastened it behind him, then filled the cups with soft silicone inserts that made his chest look full and round. Stockings followed, rolled slowly up his legs until the lace tops gripped his thighs. Every touch was deliberate, clinical, and filthy at the same time.
Turn around, she ordered. He did. She bent him over the edge of the bed and spread his ass, working cool lube between his cheeks with two fingers. He grunted, pushing back without meaning to. Thats it, she murmured. Youre already wet for Mommy.
She left him there while she changed. When she returned she wore only a black silk robe that fell open as she moved, revealing the thick strap-on harnessed between her legs. She climbed onto the bed behind him, grabbed his hips, and dragged the head of the toy along the panties until the fabric was soaked.
Beg, she said.
Please, he whispered.
Louder.
Please fuck me, Mommy.
She yanked the panties aside and pushed in. The stretch burned, then bloomed into something hotter. She fucked him in steady, deep strokes, one hand fisted in his hair, the other reaching around to stroke his cock through the panties. Every thrust made the bra bounce against his chest. The filthy sound of lube and skin filled the room.
She pulled out, flipped him onto his back, and climbed over his face. Clean it. He opened his mouth and took the strap-on between his lips, tasting himself on the silicone. She rode his tongue for a minute, then slid down his body and sank onto his real cock instead, riding him hard while the strap-on bobbed against his stomach.
When she came she clenched around him so tight he followed, spilling into the panties she still hadnt taken off. She stayed seated on him, breathing hard, then leaned down and kissed his forehead.
Good boy, she said softly. Next time you hide something from me, the outfit gets even sluttier.
He lay there in the ruined lingerie, chest heaving, already wondering what she would make him wear tomorrow.