Allison had spent years pretending not to notice.
Her son’s cock was a fucking monster. Thick as her wrist at the base, longer than her forearm, heavy enough that it hung and swung even when only half-hard. Veins stood out along the shaft like ropes. The head was broad and blunt, the kind that forced a woman’s body to stretch around it whether she was ready or not. She had seen it by accident once when he was changing. She had seen the outline of it straining against his sweats more times than she could count. She had dreamed about it. And eventually, after long, careful conversations—sober, repeated, crystal-clear consent—she stopped pretending.
They both wanted it. They were both adults. The taboo was part of the heat.
Tonight it started in the bathroom.
Steam curled against the mirror. The wide tub was already half-full, water lapping softly. Allison sat on the edge in a thin white robe that did nothing to hide the heavy swing of her big tits. Her nipples were already tight against the fabric. Her son stood in front of her, naked, that massive cock rising under its own weight until it pointed at her face like an accusation.
She reached out with both hands. Even using both, her fingers couldn’t fully close around the girth. The heat of him made her cunt clench hard.
“Look at this thing,” she whispered. “Biggest cock I’ve ever seen in my life. And it’s mine now.”
He didn’t speak. He only watched her with dark, steady eyes while she leaned in and dragged her tongue from the heavy, full balls all the way up the underside in one long, wet stripe. Then she opened her mouth as wide as she could and took the head past her lips. Even that stretched her. She worked the first few inches carefully, tongue swirling under the ridge, spit already running down the shaft and over her knuckles. Her jaw ached almost immediately. She didn’t care.
He slid his fingers into her hair—firm, not cruel—and guided her deeper. She gagged wetly, eyes watering, throat fluttering around the intrusion. Thick strings of spit stretched between her lips and his cock when he finally pulled her off. She gasped, chin shiny, and looked up at him like a woman who had found religion.
“Get in the tub,” he said, voice low.
She stood, let the robe slip from her shoulders, and stepped into the warm water. Her heavy tits floated, soft and full. She turned, braced both hands on the far edge of the tub, and spread her legs wide—deliberately, shamelessly—presenting herself. Mom spreading her legs for her son.
He climbed in behind her. Water rose around their thighs. He rubbed the blunt, swollen head of that monster cock up and down her slit, coating himself in the slick that was already dripping from her. She pushed back. He pushed in.
The stretch was slow and relentless. Inch after thick inch forced her open. She panted against the cool tile, forehead pressed to the wall, cunt gripping him so tightly it almost hurt. When his hips finally met her ass she was fuller than she had ever been. The pressure against her cervix made her vision blur at the edges.
“Fuck, Mom…”
He started moving. Long, deep strokes that dragged every ridge over the places that made her shake. Water sloshed hard against the sides of the tub. Her big tits swayed and slapped against the surface with every thrust, nipples dragging through the warm water. She reached back with both hands and spread her own cheeks wider so he could watch that huge cock disappear into her again and again.
He fucked her harder. The wet, filthy sounds of skin and water filled the bathroom. She came first—sharp, shaking, crying out as her cunt clamped down in rhythmic pulses. He didn’t stop. He fucked her straight through the orgasm and into the next one, using her body’s contractions to take her deeper.
When he finally pulled out, she turned immediately, sank to her knees in the shallow water, and opened her mouth. He stroked that monster cock twice and painted her face. Thick ropes across her cheeks, her lips, her tongue, dripping down onto the upper slopes of her heavy tits. She licked what she could reach, swallowing greedily, then looked up at him with come still running down her chin.
“Good girl,” he said, rough. He wiped a thick streak from her cheek with his thumb and pushed it into her mouth. She sucked it clean without hesitation.
They didn’t stop there.
He lifted her out of the tub, still dripping, and laid her on the thick bath mat. He spread her legs wide again and buried his face between them, licking her open, messy cunt with long, thorough strokes. He sucked her clit between his lips, then pushed his tongue inside her, tasting the mixture of her and himself. She held his head and rolled her hips against his mouth, grinding shamelessly until she came again, thighs trembling around his ears.
The second he lifted his head she was already pulling him up. He flipped her onto her hands and knees, yanked her ass higher, and sank that massive cock back into her from behind in one long, relentless thrust. This time he took his time—slow, deep, controlled. One hand fisted in her wet hair, keeping her arched. The other occasionally landed a firm, stinging slap on her ass whenever she got too loud or tried to push back too greedily.
She loved the discipline. The sharp reminders that she was his to use. That she was his cum-slut.
He kept her there for a long time, fucking her in deep, measured strokes until her arms gave out and she collapsed onto her elbows, face pressed to the mat, ass still high. Only then did he speed up. Only then did he bury himself to the hilt and flood her. Hot, heavy pulses that filled her until it leaked out around his cock and ran down the insides of her thighs in thick white streams.
Even after he pulled out she stayed like that for a moment, open and leaking, breathing hard.
He helped her back into the tub. The water had cooled, but neither of them cared. She washed his cock carefully, almost reverently, both hands sliding along the still-sensitive length, cleaning every inch. He washed her tits with the same focused care, thumbs circling her nipples, then slid his hand between her legs and cleaned her thoroughly, fingers gentle against her swollen, used cunt.
No one else needed to know. This was theirs.
Allison looked at her adult son—her lover, her secret—and felt nothing but heat and certainty.
“Next time,” she said quietly, still catching her breath, “I want you to make me come in public. Somewhere someone could almost see. I want to be your cum-slut where the risk is real. I want you to make me shake and try not to make a sound while people walk past.”
He smiled, slow and dark, and kissed her with the taste of her own cunt still on his tongue.
“Done,” he said. “But first I’m going to fuck you again in the morning. And you’re going to spread those legs for me the second you wake up.”
She smiled against his mouth, already wet again at the thought.
“Yes, baby. Mom’s going to spread her legs for her son whenever he wants.”
They stayed in the bathroom a long time after that—kissing, touching, her hand slowly stroking that monster cock back to full hardness while he played with her heavy tits and whispered every filthy thing he planned to do to her next. By the time they finally dried off and stumbled to bed, she was sore, marked, and completely, willingly owned.
And she couldn’t wait for morning.
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