Mark had been watching his grandmother through the cracked bedroom door for three straight nights. At twenty-five he knew exactly what he was doing, and he didn’t give a damn. The old house was quiet except for the low creak of bedsprings and the wet sounds his fist made around his cock while he stared.
Evelyn, sixty-eight but still thick in the hips and heavy in the tits, stood in front of her mirror every evening and peeled her clothes off like she was putting on a show. Tonight she wore a plain white bra that barely contained her sagging, veined breasts. She unhooked it, let them drop, and cupped them, thumbs rubbing her thick nipples until they stiffened. Mark’s mouth went dry. He squeezed his shaft harder, precum leaking over his knuckles.
She turned, bent at the waist, and slid her cotton panties down. Her ass spread, revealing the dark, wrinkled ring of her asshole and the thick lips of her cunt, already glistening. She reached back and spread herself wider, two fingers sliding through her folds with a soft squelch. Mark bit his lip to keep from groaning.
Then she spoke without turning. “You gonna stand there jerking off all night, or are you coming in here to fuck your grandma?”
Mark froze. The door swung open the rest of the way. Evelyn straightened, completely naked, and looked straight at him. Her eyes dropped to his throbbing cock.
“Get in here,” she said, voice low and rough. “And close the damn door.”
He stepped inside, heart hammering. She grabbed his wrist and pulled him to the bed, pushing him onto his back. Her heavy tits swung over his face as she climbed on top. She grabbed his cock, lined it up, and sank down in one slow, wet slide. Her cunt was hot, loose, and dripping, gripping him like a fist.
“Fuck,” she grunted. “Been waiting for you to grow a pair and do something about all that spying.”
She rode him hard, hips rolling, tits slapping against his chest. Every time she dropped, her ass cheeks spread and her asshole winked at him. Mark reached around and shoved two fingers into that tight, puckered hole. Evelyn moaned louder, grinding down until his balls were soaked with her juices.
“Deeper, you little pervert,” she hissed. “Finger grandma’s ass while you fuck her cunt.”
He thrust up to meet her, fingers pumping in time with his cock. The room filled with the filthy sounds of skin slapping skin and the wet squelch of her pussy. Evelyn leaned forward, feeding a thick nipple into his mouth. He sucked hard, teeth scraping the sensitive bud while she rode him faster.
She came first, cunt clamping down, a gush of warm fluid soaking his balls and the sheets. “That’s it, fill me up,” she panted. “Give grandma that load.”
Mark grabbed her hips and slammed upward, unloading deep inside her. Thick ropes of cum pulsed out, overflowing around his shaft and running down his balls. Evelyn kept grinding, milking every drop until he was shaking.
She climbed off, turned around, and presented her dripping cunt and asshole to his face. “Clean it up, spy boy.

Tongue both holes.”
Mark buried his face between her cheeks, licking his own cum out of her sloppy pussy and then pushing his tongue into her ass. Evelyn reached back, spread herself wider, and moaned while he ate her out.
When she was satisfied she turned, straddled his face again, and lowered her cunt onto his mouth. “Suck grandma’s clit till she comes again.”
He did, sucking the swollen nub while two fingers worked back into her ass. She came hard, thighs shaking, flooding his mouth with fresh juice.
Later, lying tangled in the wet sheets, Evelyn stroked his softening cock and whispered, “Tomorrow night you’re bringing that camera you’ve been hiding. I want pictures of my grandson’s cock in every hole.”
Mark was already getting hard again.