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@spookymoonie this is toooo cheeky i love it <3

Professor Moony Smut

anon asked for a continuation off this kink prompt so i just opened myself up to the spirits and this is what came out idk hope you like it luv

we don't need fancy titles here.

tags: uni-teacher-student, age difference, deepthroating, gagging, hair pulling, degradation, gratuitous dirty talk, 'sir' kink.

When Sirius had signed up for this lit class, his only intention was to fill up his elective quota while nobly being James’s wingman.

But with the bastard now fucking his brother and also introducing the lovely, intellectual force that was Lily Evans to be worshipped by both of the idiots, Sirius was free to leave them to their threesome and pursue his new noble mission:

Bagging the school’s newly minted associate professor.

Even if it meant the entire class also getting glimpses of his curated jean shorts and panties ensembles.

And Sirius—who would happily stare at his calculator for five hours straight rather than a ‘classic’ novel for a mere five minutes—had decided this course, despite it having nothing to do with his mechanical engineering degree (or even the minor in physics he was chasing just to remind everyone he was more than a pretty face and fantastic arse. It was the modern age—he could do all four, thank you very much.) is where he would funnel his extra time and energy into.

He would sleep, breathe, and eat up any tidbit of Remus Lupin’s niche interests to prove he was a man of renaissance, the holder of multi-faceted cleverness, a connoisseur of all things respectable and acclaimed in the arts—

He would become Remus Lupin’s classroom cocksleeve if it was the last thing he did before his undergrad was done.

But the results were so far…

Underwhelming.

One month—eight classes—many emails exchanged over additional reading—visiting every single open office hours, and most recently, a private appointment in which he had presumptuously eased a plug into his arse in case things went according to plan, and still, nothing to show for it except for sticky panties, alone in his bedroom, with the insecurity that he wasn’t temping enough for his professor to take the risk.

Sometimes he caught Remus relaxing into their off-topic conversations at the end of the night after class, bonding over shared fascinations with specific cult films, debating about the best late-night restaurants (Sirius praying for an invitation that never came), and the latest, their soulmate-worthy music compatibility in which Remus had forgotten their student-teacher relationship and almost offered Sirius to borrow from his vinyl collection.

Before his professor subtly backtracked and woefully recommended a shop instead.

And every time he laid it on a little thicker, straightening his back a little more to raise the hem of his ripped top up his inked stomach so that Remus would ask what was tattooed on it—

Fucking colour-coordinating with different thongs to see which one would finally catch his professor’s attention (red, by the way)—

Remus would put the mask back on.

Frustratingly cordial. Painfully oblivious.

And worse, polite.

And Sirius knew the mischief in Remus’s eyes when his sarcasm came out. He saw the way his professor threw his head back to laugh when Sirius told stories of him and James being chaotic, destructive fuckheads in boarding school. The way he bit back smiles when Sirius made comments about James trying to woo Lily Evans in class through his participation that day.

And the smirks. By gods, those deliciously sadistic smirks Remus tried to hide when making class announcements that elicited groans from the student.

Sirius knew—deep in his bones and straight down to his perpetually begging cock—that his professor was anything but a polite man.

And after presumptuously working his hole open and sliding in a plug for the off-chance Remus did finally give in during their private appointment (then feeling the aching disappointment of sliding it back out when he returned home without being fucked on top of his classmates’ essays), Sirius was determined to seduce Remus by being top of the class.

The problem was that Remus was lecturing right now, and Sirius was utterly, completely, and fully fucked.

Fucked, as in forgetting bullet points as soon as Remus said them.

Definitely not in the sense of being slammed down over a desk, arse up, with Remus’s appraising hand moving over the seams of his tight jeans to get a better peek of the red panties Sirius artfully positioned just over the low waistline.

Sirius was forcing his hand to scratch into his notebook all the important details of the passage they were discussing and failing to keep up.

Definitely not being forced to his knees in front of Remus’s desk chair while his professor painted his face with cum and told him how pretty he looked.

He felt his heart racing, the panic of realizing he didn’t understand what the fuck a ‘Jungian perspective of eighteenth-century literature’ meant or how it was supposed to get Remus to shove him up against the lecture hall door after class with his fingers shoved in Sirius’s mouth to keep him quiet.

He needed to be the ultimate wet dream, the most perfectly fuckable dream student Remus Lupin had ever fantasized about, but the lecture was going too fast, a blur of words that bled together as indecipherable as his notes.

The world tilted a little.

“Sirius.”

He was going to fail—

“Mr. Black.”

There was a hand caressing the back of his head and he froze, eyes flying up from his notebook.

He looked up and found Remus next to him in the front pew of the auditorium he sat at every day, front and center, hard and willing.

Sirius swallowed thickly, mouth dry and numb, cotton filling it when all he wanted was a cock.

But then the hand in his hair dropped to his bicep, and Remus steadily pulled him up. Sirius stumbled to his feet, feeling numb, almost out of sorts, and helplessly swayed closer to his professor.

The room was quiet, and he turned to survey the empty pews, the lights turned off in the hallway. He backed Sirius up against the long table, and Sirius felt the edge of it hit his arse.

Every nerve in his body ignited as his professor nudged his knee between his legs and leaned to whisper in his ear, “Everyone’s gone.”

He rested his hand on Sirius’s hip, fingers teasing under the raw edge of Sirius’s cropped band-tee hesitantly, just testing the waters as if Sirius wasn’t hadn’t been ready to plunge in since the first class.

“I tried to tell you. You didn’t hear me calling?” He peeked over Sirius’s shoulder, at the messy scrawl on his notebook and tsked. “You call that paying attention? Are you even trying today?”

Sirius’s mouth dropped open, searching for the right words to say. “I’m sorry.”

Remus gripped Sirius’s chin with bruising fingers, jerking it up in punishment and exposing the pale column of his throat before leaning down and licking a long stripe that took Sirius’s breath away and made his cock twitch underneath the pressure of Remus’s body.

He tilted Sirius’s face back down and asked, “How sorry?” bumping their noses almost lovingly. “You’re always so good in my class.” He slid his hand away from Sirius’s waist and back towards the small of his back, tracing the bare skin above the red lace of Sirius’s thong, back and forth, a slow drag of his thumb before wrenching Sirius roughly away from the desk by his hip.

The fingers gripping his chin moved back into his hair and forced Sirius clumsily to his knees. He winced at the tight hold in his hair, not bothering to hide his deep moan from the sting of his professor’s hand gripping his hair. “Fuck,” Sirius hissed, settling his arse back on his legs and closing his eyes to savour the moment.

“Tell you what,” Professor Lupin began. “I’ll make a deal with my favourite student.”

Sirius opened his eyes and basked in Remus’s sweet smile.

“If you show me how good you are at sucking cock, I’ll wave this week’s paper.”

Sirius jumped back onto his knees, hands flying up to his professor’s zipper, but the hand in his hair jerked his head up again, stilling Sirius’s hands and forcing his gaze back up.

“I didn’t tell you to move yet, did I?”

Sirius whimpered.

“Don’t tell me a pretty slut like you doesn’t know how to follow directions.”

Sirius felt his blood pump faster. “I’m sorry.”

“Sir,” Remus commanded, reaching down to undo his zipper, the rustle of brown trousers being shoved down over his cock.

Sirius felt his mouth water at the sight of it and barely forced out a coherent, “I—I’m sorry, Sir.”

“There’s a good boy.” Remus took his heavy cock in his hand, then ran his fist over the length of it, squeezing out a bead of pre-cum from the tip of his cock as Sirius knelt before him, mouth parted, squirming on his knees in anticipation for his next order.

He whimpered, waiting patiently as the man above him moaned low in his throat. “Please,” Sirius begged quietly, transfixed with the single white drop glistening at the tip and licked his lips.

“So polite,” Remus cooed, rolling his hand over his cock once more before going still. “Open your mouth.”

Sirius opened his mouth wide, offering his pink tongue out for his taste of cum, but Remus bent his head and spit onto Sirius’s tongue instead.

Remus gazed down at him as the glob of clear frothy spit slid along Sirius’s tongue. Before it could drip off, Remus ordered, “Swallow it.”

And Sirius did, relishing the warmth of it coating the back of his tongue, his first taste of his professor sliding slowly down his throat. He licked his lips, eyes back on Remus’s satisfied smile.

“What do you say?”

“Thank you.”

“Sir,” Remus reprimanded, pulling Sirius’s hair tighter.

Sirius’s cock twitched at the pain and whined, “Thank you, Sir.”

Remus tsked. “Maybe you’re not as clever as I thought you were. Maybe you don’t deserve to be my classroom whore.”

“No—please—let me—I—” He ran his hands up Remus’s thighs, gripping onto the scarred skin, and begged, “Please let me suck your cock, Sir. I’ll be so good for you, Sir.”

“Will you swallow me down like the slut you’ve been parading yourself around as in my classroom?”

“Yes, Sir.”

“Will you sing for me when I shove my cock down your throat?”

“Please, Sir.”

Remus pulled on Sirius’s hair until his neck was straining as far back as it would stretch. “Will you let me fuck my cum into that pretty mouth until you choke on it?”

“Fuck, yes! Please, fuck me,” Sirius gasped. “Ruin me. Do whatever you want with me. I want this. I want this so much.” He panicked when he saw Remus arch an eyebrow and added instantly, “Sir.”

“I know you do. You always work so hard.” Remus manhandled Sirius’s head forward, chin tilted at just the right angle to line the tip of his cock with Sirius’s plush lips. “Don’t think I haven’t noticed how hard you’ve been trying,” he said, guiding it towards Sirius’s outstretched tongue. “My favourite student—keep your tongue out, baby. Get me nice and wet.”

Sirius moaned at the taste, eyes fluttering closed as the head of his professor’s cock ran across his tongue, back and forth until he took a chance and curled his tongue, licking up the bead of pre-cum that had been taunting him.

“You’ve been begging to be fucked over my desk since the second class. All those little lace panties on display for the whole fucking school to see—”

Eyes still closed, Sirius felt the slide of his professor’s cock press forward, weighing down on his tongue, the head stretching his mouth open as it sank into the wet, warm cavern of his mouth. He hummed around the head, playing with the weight of it as he laved and massaged the underside of it with his tongue.

“Look up, love. Let’s see what my favourite student looks like when he’s willing to fuck his professor for full marks.”

Sirius’s lashes fluttered open, staring up with blackening hungry eyes that dared Remus to take more from him.

“All those outfits, all those pretty panties on that round arse were for me though, weren’t they?” Remus asked, sliding Sirius’s head over his cock, making his student’s mouth bob over it lightly.

Sirius felt the slide of spit spill over his bottom lip, Remus’s cock pushing passed his lips and leaving trails of drool from being used. The delicious rhythmic pull and twist on his hair sent shivers down his spine as Remus pushed himself deeper into Sirius’s mouth.

“Do you know what it did to me? Watching you run around looking like a fucking whore when I knew those tight little outfits were for me. Were you waiting for me to snap? Are you happy you finally got what you deserved? Teacher’s whore on the dirty classroom floor while his hole gets fucked—” Another hand threaded into Sirius’s hair.

He gagged on Remus’s new thrusts, writhing on his knees from the force of it as dark laughter cascaded over him every time the tip of Remus’s cock brushed against the back of his throat.

“—How many times did you linger after class, praying I’d rip those panties down your thighs and spread your arse apart so I could see that tight hole stretched wide, just waiting to be fucked?”

Sirius’s eyes up to Remus’s, his cheeks growing warm and red.

Remus groaned, rolling his hips and pulling Sirius’s mouth onto him with every thrust, “What, you think I didn’t know how ready and desperate you were during our appointments? How much you were begging for me to bend you over and spank that pretty arse red, to fuck you with that plug until you whined and cried for me to slide my cock in instead?”

Remus tangled his fingers into Sirius’s black silky hair and pushed his mouth down on his cock. Sirius spluttered, eyes watering and squeezing tight.

“No, no, you look at me, baby—come on, put those pretty eyes on me—I won’t let you breathe until you do.”

Sirius blinked back tears and looked up at his professor through a watery gaze, not knowing where to steady his focus on, just training his teary gaze up for his professor to see.

Pleased, Remus eased his hips back and Sirius coughed and blinked, tears finally spilling down his pale cheeks. “Is your hole ready for me today, too?”

Sirius, mouth stuffed full, and lips spread wide around the shaft of his professor’s cock, shook his head, deeply regretting not wearing it today.

“What a shame,” his professor thrust into his mouth rougher in disappointment, hitting Sirius’s throat and pulling back fast just to do it all again. “I’ll fuck that hole loose after I come in your mouth, don’t you worry, baby. I’ll have you writhing and begging for me to fuck that tight arse as hard as I can by the end of the night. Because that’s what a pretty whore like you was made for, wasn’t it?”

Sirius couldn’t answer, couldn’t hum that his professor was saying all the right things, or fucking him in all the right ways. He couldn’t acknowledge his professor’s dirty promises as Sirius made good on his own and sang around his professor’s cock, clumsy hands desperately fumbling with the button on his jeans and yanking his zipper down. He shoved his hand inside the warm denim and squeezed his fingers around his cock.

He heard Remus laugh above him. “Look at you, getting off on me using your mouth. Is the promise of cum on your tongue making you this desperate? Is your cock throbbing knowing that you might get to be my personal cumdump for the rest of the term?”

Sirius whimpered, feeling his cock pulsating in his hand, his thighs tensing, his stomach coiling and coiling, stringing his body tighter with every punishing thrust of his professor’s cock trying to breach his throat.

He was so close already, he just wanted to come—he wanted to feel the hot release of it on his fingers, to show what a good fuck he could be, to see what a good boy Sirius could be for him, to finally earn his position on his knees underneath Professor Lupin’s desk.

“That’s it, baby, make yourself come. You deserve it for being such an insatiable slut all month.”

Sirius choked, his lashes wet and sticking, making his cock twitch, his hips stutter into his own vise-grip.

“That’s it, darling. Cry around my cock, so pretty, so beautiful—fuck—” His professor threw his head back, moaning into the auditorium, the sound of Sirius’s throat being fucked echoing in the rafters. “Suck my cock, love. Show me what a good whore you can be, Mr. Black, and I’ll make sure you get to taste it at the end of every class—”

Electricity coursed its way through his veins, shooting down to his trembling thighs as desire made his heartbeat faster. Remus and his filthy words, his cock hard and heavy in his mouth, cum spilling onto his tongue as he hollowed his cheeks and worshipped his professor’s cock as hard as he could.

“Mr. Black.” His professor moaned. “Mr. Black—”

Sirius whimpered, his hand squeezing tighter.

“Mr. Black.”

Sirius felt a painful stab on his ribcage and his eyes flew open. He spotted James, trying not to smirk from his seat next to him, Lily staring disapprovingly next to James.

“Mr. Black,” the voice called loudly again.

Sirius shot upright, feeling a wet line of drool from the corner of his mouth, and fixed his eyes on Remus Lupin’s unamused expression.

“Nice of you to join us again,” Remus greeted. “But perhaps you can try to catch up on sleep in the comfort of home." He smirked. "Or at the very least, please do so more quietly if you're going to sit in the front row.”

“I’m sorry, Sir.”

Sirius froze, embarrassment settling in along with a few giggles behind him. It wasn’t real, but mere seconds ago, he was sucking the cock of the man standing before him.

But Remus only tilted his head in confusion, and Sirius felt his face go hot. Cheeks steaming red, Sirius watched on as Remus turned back towards the projection with the hint of a smirk on his face.

“No need to apologise. But if you’re having a hard time staying awake, best to excuse yourself and get a cup of coffee. We’re only halfway through the lecture.” He glanced back at Sirius and said, “There’s a stand next to the Arts Building that isn’t too far away.”

Trying to quiet his nagging cock stuck in the confines of his jeans, he cleared his throat and said, “I’m alright.”

And then, again, as if Remus couldn’t make Sirius’s infatuation any worse, he stepped closer and added a little quieter, just for Sirius and the nearest of the front row to hear, “I’m sure James is more than capable of catching you up on today’s review if you change your mind about sticking out the rest of the hour.”

And Sirius nodded helplessly, his mouth parted slightly but with no clever, horny innuendo prepared, and stared dreamily as Remus returned to the middle of the floor in front of the class.

His professor lifted his notebook back up and gestured to the slide, “So, as I was saying—you’re probably wondering why we’re discussing Jungian psychology in a Lit class. But imagine reading this same piece from a Freudian lens, and how different we would see the archetypal—”

Sirius shifted in his seat and watched Remus Lupin pace the large floor of the lecture hall for the remainder of the hour.

And when the class ended for the night and Sirius had successfully gotten James to stop asking questions about his in-class dream—and more mortifyingly, why he had been humming during it—he walked by Remus’s desk as the last of the students filtered out, and decided it was best to murmur a quick ‘goodbye’ and go home with no attempts at seduction.

Sirius pulled the strap of his messenger bag over his shoulder and gave a small smile. “See you next week.”

Remus automatically replied, “Goodnight,” as if he were barely registering it was Sirius versus any other student leaving.

Sirius sighed to himself, following the last people out, then paused at the door. “I’m sorry, again,” he said, turning back to Remus.

Remus broke from his concentration and met Sirius’s gaze. He blinked a couple of times, as if he didn’t know what for.

“For… falling asleep?”

“Oh,” his professor seemed to relax and leaned back in his desk chair. “We've all been there. Thanks for sticking it out. I know it must’ve been torture.”

“No, I like this class,” Sirius said quickly, and not solely because he really was desperate to somehow charm his way into Remus’s bedsheets. “I guess I kind of sleepwalk through most of my classes.” Then Sirius snorted softly to himself and shook his head. He flitted his eyes back up to Remus’s, again, unreadable expression and added, “I can’t sleepwalk through yours. But, that’s not a bad thing.”

Remus sat silently for a moment, then looked away, softly smiling to himself like he had an amusing thought.

Or maybe that he just found Sirius amusing. Which deflated him a little to be honest.

He supposed he was sort of silly around Remus when he thought about it. He was losing his fucking mind waiting for his one chance to seduce the man.

And also worrying that the more time he spent trying to seduce his professor would just wind up revving up his growing crush on Remus as a person.

Sirius made a beeline back for the door.

“If you’re not keen on wasting a perfectly nice Thursday evening sleeping early,” Remus began casually—too casually— “There’s a new bar on the north end of campus.”

Sirius felt himself beaming brighter than any spotlight in the dark lecture hall.

Remus added, “They have a mean espresso cocktail. I couldn’t tell you what’s in it, except the secret to staying awake at the bar until 4 AM.”

This… was new. This was something, and Sirius bit his cheek.

Remus shrugged. “I just thought I’d mention it because—”

Sirius asked, “Do you go to this bar often?”

"Often enough. Might even stop by tonight," Remus said, diverting his eyes as he seemed to diligently gather his things from the desk.

“On a school night?” Sirius pried.

Remus smirked. “Yes, sometimes the retirement home extends curfew.”

Sirius felt himself blush. “Nothing wrong with a little experience."

“Well, I'm in my thirties now, so every time someone calls me ‘Sir,’ my hair speeds up the greying process by another year.”

"If I can't call you 'Sir' then you're going to have to find something else for me to call you,” Sirius said, feigning innocence and hooking his thumb into the belt loop of his jeans. He purposely drew it down heavily, revealing the top of the red lace, just enough to look effortless. “Anyway, I think you’ll look great as a silver fox one day.”

Remus’s eyes were fixed on Sirius’s, like he was making a conscious effort not to look down at the exposed bit of Sirius’s stomach.

His jaw was even clenched.

Sirius felt a small, dopey smile bloom on his pink face, a little flutter of affection in his chest. “So, bar at the north end of campus. I’ll definitely have to check it out tonight. Maybe see you later.”

He waved, then opened the classroom door, but before he stepped out into the hall, he peeked over his shoulder and caught his professor memorising the curve of his arse and the exact shade of red lace that was skimming the top.

The entire ride home, breaking speed limits as he throttled his motorbike, he recited his mantra to any lustful deviant god that would hear him:

“Please let me suck his cock tonight. Please let me suck his cock tonight. Please—”

and then he goes to the bar and Remus is obvi already there, and Sirius learns that dreamRemus is soooo much more vanilla than ProfessorDaddyRemus really is

read it hereeeee k bye<3

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