Tae slumped back in Koo’s office chair, chest heaving, his cum still dripping down the laptop screen in thick, sticky streaks. He didn’t bother wiping it off—fuck that. Let her find it. A wicked smirk spread across his face as he stared at the mess, his cock softening but still twitching from the high. “Yeah, take my load, you slutty prof,” he muttered under his breath, chuckling darkly. This was just the start. He pulled out his phone, snapping pics quick: close-ups of the cum-splattered keyboard, the screen frozen on one of her videos where her pink fat pussy was spread wide, fingers buried deep. Then he angled the camera to catch his dick in frame too—still semi-hard, veined and thick, with a drop of cum at the tip. “Evidence, bitch,” he whispered, recording a short video panning over the whole scene, her moans faintly playing in the background.

He even screen-recorded a few clips from her HornyFans—her riding those fingers, tits jiggling like crazy, begging to be degraded. “Perfect blackmail fodder.” Satisfied, he closed the laptop gently, leaving it just as he’d found it, minus his “gift.” The office light flicked off, and he slipped out into the night, smirking all the way home. In his apartment, he crashed on the bed, scrolling through the pics, already planning tomorrow. You’re mine now, Koo. Time to turn the tables.

Morning hit the campus like any other, but for Koo, it started with a jolt. She breezed into her office early, coffee in hand, dressed to kill—or tease, really. Today’s outfit: a sheer white blouse that clung to her massive tits, buttons undone just enough to show cleavage and the hint of a lacy bra, paired with a tight black skirt that barely covered her thick ass. Heels clicking, she set her bag down and flipped open the laptop. Then she froze. Dried cum stains crusted the screen and keys—white, flaky, unmistakable. Her pussy clenched involuntarily, a hot flush spreading between her thighs. What the hell? Who did this? She glanced around, heart pounding. No one had access… right? She wiped it off hastily with a tissue, but the scent lingered—musky, male. Her mind raced: a janitor? A student? Her nipples hardened against the blouse, betraying her. Fuck, why is this turning me on? She squeezed her thighs together, feeling a slickness build. Nice wife, strict prof… but this? This was dangerous territory.

Before she could spiral, her phone buzzed—a DM from an anonymous account, burner-looking handle: @MrStrangerX. “I know what you do when you’re not teaching, Mrs. Koo.” She stared at the screen, breath catching. Mrs. Koo? Only her husband called her that… sometimes. Her thighs clenched harder under the desk, pussy throbbing with a mix of fear and that twisted arousal she couldn’t shake. Who the fuck was this? Ping—another message: a 10-second video clip. She hit play, volume low. It was her—from last week’s upload—riding her fingers, moaning, “Call me your slutty professor… mmm, fuck this pink cunt.” Her face heated, sweat beading on her forehead. Then another attachment: a pic of a hard dick, thick and veined, hand wrapped around it mid-stroke. “Like what you see? That’s for you, SluttyProfKoo.”

Koo’s hand trembled, phone slipping slightly. Her pussy was soaked now, juices seeping into her thong. Afraid? Hell yes. Turned on? God, embarrassingly so. Who is this pervert? How do they know? She had no clue—didn’t even think of Tae. She deleted the messages quick, but they kept coming throughout the morning: “Bet your fat tits are straining that blouse right now. Unbutton one more for me.” “Imagine my cock stretching that pink pussy while you grade papers.” Filthy, direct, making her flush and squirm in her chair. She tried to focus on lesson plans, but every ping sent a jolt straight to her clit. By lunch, her panties were drenched, nipples poking visibly through the sheer fabric.

Class time rolled around—her senior English lit seminar. Students filed in, chatting, but Koo was off her game. She stood at the front, voice shaky as she started. “Today… uh, we’re reviewing modernism.” No bite, no snap. Usually, she’d be ripping into someone by now, especially Tae, who sat in the back, smirking like he owned the place. He pulled out his phone under the desk, typing away on the burner app. Ping—her phone vibrated in her pocket. She ignored it at first, but curiosity—and that damn wetness—won. Discreetly, she checked: “Look at you up there, tits bouncing. Bet your cunt’s dripping thinking about my dick pic. Touch yourself under the desk if you agree.”

Koo’s face turned bright red, a flush creeping up her neck. She stumbled over her words. “Um, Eliot’s themes include… fragmentation.” No scolding, no degrading. The class whispered—What’s up with Prof Koo today? She’s not yelling at anyone. One girl raised her hand tentatively; Koo just nodded mildly. “Good point.” Students exchanged stunned looks. Tae? He was grinning ear to ear, sending more: “Good girl, staying quiet. Now imagine riding my cock in front of class—your fat ass jiggling, begging for more.” Koo bit her lip, thighs rubbing together, pussy clenching hard. She was silent, flushed, barely holding it together. This stranger’s got me so wet… fuck, I need to cum. But she powered through, dismissing class early. Tae lingered a second, catching her eye with that smug look, but she didn’t notice—too distracted.

The texts didn’t stop all afternoon: “Send me a pic of those pink lips—your mouth ones, slut.” “Bet your husband’s clueless while you finger that hole for fans.” Each one dirtier, pushing her buttons. By evening, as she packed up, a new one: “Custom video tonight. Wear the same blouse you have on now, with a tiny thong underneath—no skirt. Ride a dildo, moan ‘Mr. Stranger’ over and over, and cum hard. Beg me not to expose your secret life. Fail, and I make SluttyProfKoo public—hubby, students, everyone gets the link.” Koo’s pussy tightened like a vice, a whimper escaping her lips. Oh god, no… but fuck, yes? She was terrified, aroused, trapped.

Home that night, Dohyun was his usual sweet self—dinner, kisses, bed by 10. He adored her, fucking her gently before snoring away. Koo waited until his breaths evened out, then slipped from the sheets, heart racing. She tiptoed to the guest room, locking the door. I have to do this… or everything crumbles. She stripped down, keeping the sheer white blouse on—buttons straining over her heavy tits. She picked a tiny black thong from her secret drawer, the kind that barely covered her pink fat pussy, string disappearing between her thick ass cheeks. God, she looked slutty in the mirror—nipples hard, skin flushed.

She set up her phone on the nightstand, hitting record. Legs spread on the bed, she grabbed her favorite dildo—thick, veined, pink like her pussy. “Okay, Mr. Stranger,” she whispered, voice husky and trembling. “This is for you… please, don’t tell anyone my secret. I’m such a filthy slut, hiding behind my professor mask.” She slid the thong aside, exposing her dripping pink lips, fat and swollen. Slowly, she teased the dildo against her entrance, moaning soft at first. “Mmm, Mr. Stranger… your cock pic got me so wet today. I need this inside me—stretching my pink fat pussy like you would.”

She pushed it in, gasping as it filled her, walls clenching around the girth. “Oh fuck, Mr. Stranger! Deeper… make your slutty prof beg.” Her hips rocked, riding it slow, tits jiggling under the blouse, nipples rubbing against the fabric. “Please, don’t expose me—don’t tell my husband I’m a whore online, showing my holes to strangers. I’ll do anything… mmm, fuck this cunt harder!” She picked up speed, wet slaps echoing, dildo plunging deep. “Mr. Stranger, Mr. Stranger… cum in me, breed this married pussy. Look at my fat tits bouncing—pinch them, slap them, use me like the degraded bitch I am.”

Koo was lost now, acting filthier than ever—fingers circling her clit, ass lifting off the bed. “Begging you, sir… keep my secret. I’ll be your personal slut—send you videos of my pink asshole, my squirting cunt. Just don’t ruin me… oh god, Mr. Stranger, I’m gonna cum!” She rammed it faster, body shaking, tits heaving. “Yes, yes—fuck your prof’s hole! I’m cumming… ahhh!” She exploded, pussy gushing around the dildo, squirting onto the sheets, moans turning to whimpers. Blushed and panting, she stopped recording, attaching it to the DM. God, that was hot… but terrifying. Sent.

Back in his apartment, Tae’s phone buzzed. He opened it, grinning. “Holy shit.” The video loaded—Koo in that blouse, thong pulled aside, riding the dildo like a pro. Her dirty talk hit him hard: begging, moaning his alias, promising anything. His cock stiffened instantly, tenting his boxers. “Fuck yes, Koo… you filthy whore.” He stripped, hand wrapping around his thick length, stroking slow as he replayed it. “Look at you, begging Mr. Stranger—bet you have no idea it’s me, the student you hate. Mmm, that pink pussy taking it so deep… I’d wreck it for real.”

He pumped faster, moaning. “Yeah, ride it, slut. Say my name—wait, you will soon. Begging not to expose you? Too late, bitch—I’m gonna make you my toy. Imagine my cum filling that fat cunt instead of your toy.” His balls tightened, eyes on her jiggling tits, her squirting climax. “Take it, Koo… oh fuck, I’m cumming!” He shot his load, ropes splattering his chest, groaning her name. “You’re mine now.”