The days blurred into a grinding routine for Tae, each one a fresh hell courtesy of Professor Koo. She didn’t let up—not even a little. If anything, her sharp tongue got meaner, like she got off on watching him squirm. Monday morning, he handed in an essay he’d poured hours into, citing every damn source perfectly, analyzing Shakespeare’s sonnets with quotes and themes tied up neat. He thought it was gold. But there she was, in her usual slutty getup—a red blouse so tight it looked like her massive tits were gonna burst the buttons, paired with a leather skirt that hugged her thick ass like a second skin. No bra today; he could see her nipples poking through when she leaned over to grab his paper.

“Mr. Kim,” she drawled, her pink lips curling into that smug sneer as the class watched. “This… drivel. You call this analysis? It’s like a child scribbling with crayons.” She tossed the paper back at him, red marks bleeding all over it. “F again. Do you even understand the concept of metaphor, or is your head too full of nonsense to grasp it?” Laughter rippled through the room, and Tae’s face burned. He bit back a retort, clenching his jaw. Bitch. I’ve been studying my ass off. But he said nothing, just nodded stiffly. “Yes, Professor. I’ll redo it.”

That night, he hit the books hard—library until closing, chugging energy drinks, eyes bleary from poring over texts. He aced a pop quiz the next day, or so he thought. But Koo? “Barely passing, Mr. Kim. Sloppy work. See these commas? Amateur hour.” She handed him extra homework: a 10-page breakdown of Victorian lit, due tomorrow. “Maybe this will teach you some discipline,” she said, her voice low and mocking as she bent over his desk, giving him a perfect view down her blouse. Her tits swayed, heavy and full, and despite the rage boiling in him, his cock stirred. Fuck, why does she have to look like that?

Tae hated her more with every passing hour. He was tall, muscled from gym sessions where he imagined pounding her face instead of the punching bag, handsome enough that girls in class slipped him numbers. But Koo? She treated him like dirt. He controlled himself, though—bit his tongue, did the work. Wednesday, he presented on Joyce’s Ulysses, slides perfect, delivery smooth. She interrupted halfway. “Boring, Mr. Kim. You’re putting the class to sleep with your monotone droning. Sit down.” More homework: annotate three chapters overnight. He pulled an all-nighter, fingers cramping from writing, dick half-hard from frustrated fantasies of shutting her up.

By Thursday, he was exhausted, bags under his eyes, but determined. He turned in the annotations early, hoping for a scrap of approval. Koo glanced at them in front of everyone, her heels clicking as she paced. Today’s outfit? A sheer black top that showed the lace of her bra, skirt slit up the side flashing thigh. “Mistakes everywhere, Mr. Kim. Wrong interpretations, lazy notes. You’re hopeless.” She leaned in close, her perfume hitting him like a drug—sweet and musky. “Extra assignment: compare five modernist poets by dawn. Maybe staying up all night will sharpen that dull mind of yours.” The class snickered; Tae’s hands shook with fury. What the fuck is her problem? I’m doing everything right!

He stormed to the library after class, slamming books down. Hours ticked by—midnight came and went. The place was empty, just the hum of fluorescents and the scratch of his pen. He finished the comparison around 2 AM, bleary-eyed, back aching. Finally. Packing up, he trudged through the dark halls, the campus a ghost town. But as he passed the faculty wing, a sliver of light caught his eye—Professor Koo’s office door ajar, lamp still on. Weird. She left hours ago. Curiosity tugged at him. He shouldn’t, but… fuck it. He pushed the door open quietly, flipping the light switch to off—no, wait, she might notice. Better just check.

The room was neat, bookshelves lined with classics, her desk cluttered with papers. And there, right in the middle: her laptop, lid half-closed, screen dim but on. She forgot it? Sloppy for Miss Perfect. Tae’s heart pounded. He glanced around—no cameras, door shut now. Curiosity won. He flipped it open fully, the login screen glowing. Password locked, of course. But Tae wasn’t just some dumb student; he was good with tech, had hacked friends’ accounts for fun back in high school, learned tricks from online forums. A quick USB boot into a recovery tool he always carried (paranoid habit), and he bypassed it in minutes. Easy.

He poked around—files first. Syllabi, lecture notes, student grades. His own? Riddled with Fs and nasty comments: “Incompetent,” “Lacks insight.” Fucking cunt. Nothing juicy, though. Emails: boring department stuff, lovey-dovey ones to her husband Dohyun. Blah. Then he hit the browser history. Recent tabs: Amazon shopping, lit journals… and then, buried a few days back: “HornyFans” login. What the—? His pulse quickened. HornyFans? That site was straight-up p*rn. No way. But the autofill had her username: SluttyProfKoo. Holy shit.

Tae clicked it, hands shaky. The page loaded—her profile, neck-down pics of a body that looked… familiar. Massive tits, white skin, pink nipples. Thick ass. No fucking way. Subscribers: thousands. Recent video thumbnails: “Prof’s Naughty Detention,” “Slutty Lecture Tease.” He clicked the first one, a free preview: “Riding My Fingers Like Your Cock.”

The video started. There she was—or her body, anyway, face cropped out. Koo, naked on a bed, legs spread wide, her pink fat pussy on full display, lips puffy and glistening. She moaned, voice husky but unmistakable. “Oh fuck, yeah… call me your slutty professor. I’ve been so bad today, grading papers with my cunt dripping.” Her fingers—two, then three—plunged into that pink hole, squelching wet sounds filling the speakers. Her fat tits jiggled wildly as she rode her hand, hips bucking. She grabbed one tit, squeezing hard, pinching the pink nipple until it reddened. “Look at these big slutty tits… mmm, imagine sucking them while I fail your ass. Beg me, losers—tell me I’m a dirty whore prof who needs to be fucked senseless.”

Tae froze, mouth dry, cock instantly rock-hard straining against his jeans. That’s her. That’s fucking her. Shock hit like a truck, then disbelief, then… rage mixed with triumph. He laughed—loud, harsh, echoing in the empty office. “You fucking hypocritical bitch! All this time, humiliating me, scolding me like I’m shit, and you’re out here begging to be called a slut? Oh, Professor Koo, you have no idea the hell I’m gonna unleash on you now.” He leaned back in her chair, grinning maniacally. “For every F you gave me, every time you called my brain tiny, every degradation in class—I’m gonna make you pay. You’ll be my little slutty prof for real.”

He couldn’t stop. He clicked the next video: “Ass Play for Bad Boys.” Koo on all fours, ass up, cheeks spread. That thick, round ass shaking, her pink pussy peeking from below, asshole winking as she teased it with a finger. “Mmm, you want this hole? This slutty prof’s tight ass? I’ve been teasing my students all day, bending over in class… god, I need a real cock to stretch me.” She moaned, fingering her ass while rubbing her clit, tits hanging heavy, swinging. “Call me names—tell me I’m a filthy married whore who cheats on her hubby with her holes online.”

Tae’s breath hitched. He watched, mesmerized, hate fueling the lust. Another: “Tit Fuck Fantasy.” Her oiled-up tits, squeezed together, a dildo sliding between them. “Imagine your dick here, between my fat tits… mmm, Professor Koo’s special extra credit. Cum on them, baby—mark your slutty teacher.”

His cock throbbed painfully. Fuck this. Tae unzipped his jeans, pulling out his thick, veined length—hard as steel, precum beading at the tip. He stroked slow at first, eyes glued to the screen. “Yeah, that’s it, Koo… you dirty fucking slut. All high and mighty in class, but here you’re just a desperate whore showing your pink fat pussy to strangers.” He pumped faster, moaning her name. “Koo… oh god, Koo, look at that cunt taking those fingers. Bet it’s so tight, so wet. I’d fuck you raw, make you scream my name instead of degrading me.”

Video after video: her spreading her pussy lips wide, close-up of that pink fat slit dripping, fingers curling inside hitting her spot. “Beg for it, prof—tell me how much you need cock.” In one, she squirted, juices spraying as she cried out, “I’m cumming, you pervs! Your slutty prof is soaking the bed!” Tae jerked harder, dirty talk spilling out. “You like that, huh? Showing your holes like a cheap whore? While your husband’s at work, you’re fingering that fat pussy for tips? Fuck, Koo, I’d ram my cock down your throat, make you choke on it for every time you failed me. Call you my tiny-brained slut—see how you like it.”

His balls tightened, strokes frantic now. On screen, Koo was playing with her ass again, moaning, “Degrade me… tell me I’m a worthless prof who needs to be used.” Tae groaned loud. “Yeah, you are, Koo. Worthless fucking slut. I’m gonna own you—blackmail you, fuck you in your office, make you beg for my cum.” The thought pushed him over: he came hard, ropes of thick white cum shooting across her desk, splattering the keyboard. “Fuck… Koo… take it, you bitch!” He panted, body shuddering, laughing breathlessly. This changes everything.