Jake stayed behind after the last bell like he always did on Fridays. The biology lab smelled like formaldehyde and chalk, but Mrs. Harlan was the real reason he lingered. She was 35, tight body from running marathons, and she wore those low-cut blouses that showed off her heavy tits when she leaned over the microscope.
"Need help with the dissection notes, Jake?" she asked, locking the door behind the last student. Her voice was low and direct.
"Yeah, Mrs. Harlan. The frog parts are fucking confusing," he said, stepping closer. She turned and pressed right up against him, her hand grabbing his crotch without hesitation.
"Call me Linda in here. And I know what you're really here for." She unzipped him fast, pulled out his already hard cock, and started stroking it rough and steady. "Big dick for a college kid. Been wanting to suck this since the first lecture."
She dropped to her knees on the tile floor and took him straight into her mouth. No teasing. She sucked hard, bobbing deep, gagging when his cock hit the back of her throat. Spit ran down her chin onto her blouse. Jake grabbed her hair and fucked her face, hips snapping forward.
"Fuck, Linda, your mouth is so goddamn wet," he groaned. She looked up at him, eyes watering, and pulled off just long enough to say, "Get on the bench."
He hopped up on the lab table. She stood, hiked her skirt up, and climbed on top. No panties. Her shaved pussy was already dripping. She grabbed his cock, lined it up, and sank down in one smooth motion, taking every inch.
"Goddamn, you're tight," he said. She started riding him hard, tits bouncing under her open blouse. He yanked her bra down and sucked on her nipples while she ground her clit against him.
"Harder," she ordered. "Fuck me like you mean it." Jake thrust up to meet her, slamming into her pussy with wet, slapping sounds that echoed in the empty lab. She moaned loud and dirty, telling him exactly how deep she wanted it.
After a few minutes she climbed off, bent over the bench, and spread her ass cheeks. "Take my cunt from behind. Pound it."
Jake stood behind her and shoved back inside. He gripped her hips and fucked her rough, balls slapping against her. Her pussy clenched around him every time he bottomed out. He reached around and rubbed her clit fast and hard until she came, cursing and pushing back against him.
"Don't stop," she panted. "Keep fucking me."
He did, driving into her until his own orgasm built. He pulled out at the last second and shot thick ropes of cum across her ass and lower back. She reached back and smeared it over her skin, then turned around and licked the last drops from his cock.
They cleaned up quick with paper towels from the sink. Linda straightened her clothes but left her blouse unbuttoned enough to show the marks he'd left on her tits.
"Same time next week," she said, unlocking the door. "Bring that cock ready to fill me again."
Jake walked out with a grin, already hard again thinking about it. The lab would smell like sex for hours.
