She walked in on him by accident, but once she saw that massive cock in his fist, there was no walking away. Her son Jake was nineteen, home from college for the summer, and he had the bedroom door cracked open just enough for her to catch the show. He was sprawled on his bed, phone in one hand, the other stroking the thickest, longest dick she had ever laid eyes on. It had to be ten inches, veiny and heavy, the head shiny with precum as he pumped it slow and hard.
Linda froze in the hallway, heart hammering. She should have turned around. Instead she stood there watching, thighs pressing together, panties already damp. Jake groaned low, hips lifting off the mattress, that huge cock twitching in his grip. She could hear the wet sound of his fist sliding up and down the shaft. Her own son, jerking off with a cock like that. It was wrong, filthy, and she couldnt look away.
She stepped inside and shut the door behind her. Jakes eyes flew open. Momwhat the fuck? He tried to cover himself, but there was no hiding that monster. It stood straight up, angry red and dripping.
Keep going, she said, voice low and rough. I want to watch.
He stared, shocked, but his hand never left his cock. Slowly he started stroking again, eyes locked on her. Linda pulled her shirt over her head, then her bra, letting her heavy tits spill free. His fist moved faster. She shoved her shorts and panties down and climbed onto the bed between his spread legs.

Thats the biggest cock Ive ever seen, she told him, wrapping both hands around the base. Her fingers didnt even meet. She leaned in and licked a fat stripe up the underside, tasting salt and heat. Jake cursed, hips jerking. She opened wide and sucked the head into her mouth, tongue swirling, saliva dripping down the shaft. He was too big to take deep, so she pumped the rest with both hands, sloppy and wet.
Fuck, Mom, your mouth feels so good, he growled, one hand fisting her hair. She moaned around him, sucking harder, gagging when he thrust up. Spit ran down her chin onto her tits. She pulled off, strings of saliva connecting her lips to his cockhead, then climbed higher and straddled him.
She rubbed the fat head through her soaked folds, teasing her clit. Youre gonna split me open with this thing, she said, then sank down. The stretch burned, but she kept going, inch after thick inch, until she was seated fully, cunt clenching around him. Jakes hands gripped her ass, helping her ride. She bounced hard, tits slapping, pussy squelching around that huge cock. Every thrust hit deep, knocking the air out of her.
Harder, she demanded. He flipped them, pinning her down and pounding into her, balls slapping her ass. The bed creaked. She came first, cunt pulsing, soaking his cock. He kept fucking through it, then pulled out and painted her tits and stomach with thick ropes of cum, groaning her name.
They didnt stop there. She sucked him hard again and let him fuck her from behind, that massive dick stretching her ass this time while she fingered her clit. He filled her twice more before they collapsed, sweaty and spent. By morning she was sore, leaking, and already planning the next round. Her sons huge cock had ruined her, and she wanted every filthy inch of it again.