High school was a busy time for Deepthroat Cockslut. After the rumors naturally spread from the hoofball team, it was only a matter of time before she was up to her neck in dick. With so many colts maturing into the age of raging hormones, she never had a shortage of needy erections to service. She preferred to take them to a safe, neutral space, like the colts' locker room before cheer practice, and every day after school she fulfilled her destiny at least two or three times.

She did well in school nevertheless, and stayed true to her commitment to staying out of relationship business, but it was only a matter of time before one of the hoofball team members asked to be her coltfriend. She said yes, but it didn't last long when she struggled with fidelity herself. To her, she felt confined when she couldn't be free to suck whatever dicks she wanted, and it seemed terribly selfish on her coltfriend's part. She was born to suck cock, and resigning herself to one colt and one colt only was a betrayal of that.

But that didn't stop the colts she was with from confessing love to her. Even colts that she hardly knew the names of, colts whose penises she knew better than their faces, would come up to her a week after their first blowjob ever and admit that they were "madly in love" with her.

These types of encounters only made Deepy uncomfortable, and a bit wary. Colts, she learned, for all their toughness, could be very emotionally unstable.

Deepthroat Cockslut had fantasies of her own, though, and her encounters with colts her age led her desiring somepony a little more mature. Somepony who wasn't nervous or awkward as soon as they slipped out of their sheath for her.

That left her pining for her Biology teacher, Mr. Amino. He was a kind unicorn stallion, very intelligent, and one who clearly enjoyed teaching. But he also had a cute, nerdy appeal, wearing big, horn-rimmed glasses and a tendency to get a little too excited about his subject matter. Yet, he was most certainly a stallion, standing a head taller than many of the colts in her class, and where the other students had been socialized to not notice his large, full balls, Deepy couldn't help but stare at them every time he turned around to write on the board.

He taught the upper-level courses, so she had him her junior and senior years of high school, and she looked forward to those classes every day. She was overwhelmed with curiosity and desire. He was so tall, so developed, so cute, so hung, so smart- and the best part- no wedding ring.

Yet the years went by, and she did her very best in his class to try and earn his favor and notice. While it was clear that Deepthroat Cockslut was one of his favorite students, he was as professional as he was intelligent.

A week before graduation, Deepy was getting anxious. Fantasies had racked her brain for years, and it looked like they were about to go unfulfilled. She knew it was inappropriate and that it could get him in trouble, but like many young ponies her age, she was a victim of her hormones. She had to make a move before it was too late.

She had her opportunity when she checked her grade in the glass. It certainly wasn't failing, but it was the only opening she had.

After class on a Friday, Deepy hung back with her test in her saddlebags, knowing that no pony in their right minds would stay after on the weekend. The teachers may have had to stay behind, but they would all be in their own rooms. She only had one shot at this.

"Um, excuse me. Mr. Amino?" she announced herself as she approached his desk.

"Yes? Do you have a question?" the yellow unicorn peered over his glasses as he regarded her. To her, even the way his black mane was combed looked so professional, so attractive.

"Well, you see, I got a ninety percent on the test..."

"Was there a mistake?" he asked, already looking toward her saddlebags.

"Um, no, but I calculated my grade and I have a ninety-four in the class."

He looked up at her blankly. "So what's the problem?"

"Well..." Deepthroat Cockslut swallowed hard. "I was wondering if... there was anything I could do to bring my grade up?" She did her best to use a voice that she thought would be seductive, batting her lashes at him.

"I don't know why you'd want to do extra work. You're one of my best students, you don't really need any help," he said, leaning back with a puzzled expression.

"I have an A minus in the class, and I'm on track to be valedictorian. I'd really like to keep my perfect grade. I'd do anything to get an ninety-five." Again, she batted her eyes, even leaning a bit closer to him.

He gave a small chuckle. "Deepy, a ninety-four isn't an A minus. It's an A. If you had a ninety-two in the class, then you'd have an A minus."

Her heart seemed to stop. She swallowed again once she realized her blunder, trying to salvage the situation. "Well... an A plus couldn't hurt, right?"

"We don't give A pluses," Mr. Amino said flatly.

"...Right."

Now he fixed her in his gaze, and Deepy remembered that he was a lot more perceptive than his nerdy personality let on. "Deepy, what is this about?"

She could already feel the knot in her throat. Never before in her entire life had she ever been so blatantly caught by a teacher, let alone one she admired so much. It was one thing for the other students to try and shame her, but the thought of Mr. Amino rejecting her, thinking of her as just a slut, broke her heart.

She started to cry.

Mr. Amino stood and without a second thought placed a hoof on her shoulder. "Deepy, Deepy, calm down. What's the matter?"

"I- I just..." she couldn't bring herself to admit it.

"Go ahead. You can tell me."

She looked up at him with a sniffle. He was so tall, so much stronger than he looked. More than ever, she felt the wisdom and experience of this older stallion, and she believed she could trust him.

"I- just..." She sniffled again, ready to burst. "I just wanted to suck your cock!"

As Mr. Amino stood frozen in shock, Deepthroat Cockslut broke down again, a fresh stream of tears flowing down her face as she sobbed, her shame now totally exposed to the only stallion she had ever really admired. "You... what?" he stammered.

Deepy continued to speak, blubbering through her tears and sobs. "All the colts come to me for blowjobs, but they're not like you. You're so smart and funny and attractive- I just wanted to make you happy!"

He facehoofed. "It's like those magazines..." he said, mostly to himself. Deepy had yet to stumble upon pornography, so she didn't fully understand what he meant. She only looked up at him when he finally worked up the courage to look down at her. "How long have you had these... fantasies?"

She sniffled once more. "A while," she admitted quietly.

Mr. Amino gave a heavy sigh and sunk into his chair again, speaking to her in a very serious tone. "Deepy, I'm flattered. Really. What you wanted to do was very kind of you. But you have to understand that I'm a teacher, and you're a student. For me to accept your offer would be highly inappropriate. I could lose my job over it. I could go to jail over it."

She shook her head. "I'm eighteen. It wouldn't be pedophilia."

He gave her a withering glance. "Regardless. Even if I couldn't go to jail, I could still get into a lot of trouble. Now, I know that when you're young, hormones and everything else make it hard to control your urges. I was a colt too, once, and I... felt a lot of the same things you did. I've heard a lot of the rumors about you, and of course it's perfectly normal for you to have desires and fantasies. But some fantasies need to stay fantasies, because they can have real-life consequences. It's not that I don't like you. You're my brightest student. But propriety has to come first. Understand?"

Deepy stood still for a while. Mr. Amino really was very sweet, and she could hear the tenderness in his voice. But that didn't stop her from wanting him. "It's not like it would be abuse. It was my idea, after all."

"But if I got caught, that could be very bad for me."

"We wouldn't get caught. There's hardly anypony here."

Now Mr. Amino was getting flustered. "Deepy, why are you so insistent?"

She looked up at him with her sweet fuschia eyes, still glassy with tears. "Because I like to make stallions happy, and I like you. You're such a kind stallion, and you're really smart. I know you're a teacher, but even teachers have desires, don't they? When was the last time a mare sucked your dick?"

"Deepy," he started, his tone serious, as if he was going to scold her, but he stopped for some reason. "This..."

Deepthroat Cockslut sensed his resolve faltering. It must have been a while since he'd last had a mare. She went in for the kill. Batting her eyes, she looked at him. "Can I suck your cock? Please?"

Mr. Amino stared at her for a few long moments. She could see him wrestling with what he wanted to do and what he knew he should do.

But in the end, stallions would always be slaves to their needs. "I can't believe..." he groaned, leaning his head back.

"It'll be okay. I promise."

With another sigh, he looked at her, his face flushed. "So... what do we do?"

"What do you mean?" she asked.

"Well, you said this was a fantasy of yours. What did you imagine?"

"Oh," she said with a pause. No stallion before had ever really asked her about her fantasies. Deepy thought a lot about sucking dick, but she had never had a chance to have fun with the act, to explore. "I guess I just thought I'd... I don't know, seduce you."

"Do you want to, maybe, re-do it?" he asked.

"Sure, I guess," she said. Deepy rarely felt out of her element in sexual situations, but now it was clear that neither of them knew what to do. The awkwardness was heavy in the air.

Still, Mr. Amino sat up and attempted to assume character. "Okay." He cleared his throat. "Um, you wanted to see me?" he said in a deeper voice, imagining himself as a dark, lecherous stallion.

"Right," she said, getting into her own character. "I have an A minus in the class, and I really need an A. Is there anything I can do to get some extra credit?" Instead of going with her seductive voice, Deepy tried to play the sweet, innocent filly.

Mr. Amino still looked a bit uncomfortable with the scene playing out, his voice shaking a little, but he continued. "W- well, you're a nice enough filly. We'll find something for you."

"Oh, thank you, Mr. Amino!"

"Hmm..." he said, rubbing his chin theatrically. "What about an assignment on anatomy?"

She cocked her head, playing up her innocence. "What kind of anatomy, Mr. Amino?"

He tried to hide his gulp. "Pony anatomy. Specifically, the anatomy of the pony stallion."

Deepy nodded eagerly. "I know about that!"

"I'm sure you do. I hear you're quite popular with the colts."

Mr. Amino spread his legs, and Deepy felt like she would gasp. His cock had flopped out of its sheath, his heavy balls awaiting her attention. This cock wasn't like the colts' that usually filled her muzzle; it dwarfed them in size, and its thickness was enough to make her mouth water. But she didn't want to break character over the slab of stallion meat before her. "What is the assignment, exactly?"

"We're going to see how familiar you are with male anatomy and how it functions." Then, he faltered a little, his voice returning to normal as he asked, "Is that okay?"

She nodded. "What should I do?" she asked sweetly.

"Let's see if you understand stimulation and arousal. Try to give me an erection."

Deepy nodded once more, stepping forward until her muzzle was just inches away from his package. She couldn't help but smile. It was everything she had hoped it would be, long and thick and soft, with a big, full sack waiting to be emptied. She couldn't wait a moment longer.

With a little lean forward, she plastered her tongue to his sack, drawing a broad line over his nuts. "Ahhh," he sighed. She didn't realize how sensitive he would be, but it didn't stop her from bathing his orbs, sucking on them gently with her lips. For Deepthroat Cockslut, starting with the balls was just good manners, like a formal introduction before she got more intimate with the cock.

Letting her tongue wander upward once the balls were nice and wet, she traced over the folds of the sheath and along the underside of the shaft, eliciting another moan from her teacher. She wrapped her warm tongue around the sides, being sure to let her breath wash over the wetted parts where he could feel it. Already it was growing, standing upright and at attention, until she could feel it throbbing against her tongue.

Deepy pulled back. "Did I do it?" she asked, her voice oozing sweetness.

He took a moment to catch his breath, still trying to keep his dark voice. "Yes, this is quite a stiff erection. Good work." He took another pause to swallow hard. "Now I want you to study the male ejaculation. Can you do that?"

Deepy nodded once more, licking her lips in preparation. Angling the tip toward her with her hooves, she could feel her heart thumping in her chest. This was it. This is the cock she had been dreaming about for the better part of two years now. And it was hard, dripping, throbbing, waiting for her to suck it.

She plunged the tip into her mouth, swirling her tongue around the head, feeling the flare expand a bit in her cheeks. "Ohh, Deepy," Mr. Amino moaned. That was her signal to go further. She slid her lips down the thick shaft, feeling that big head slip into her throat, the precum already dribbling into her gullet. Soon she was at the midring, where she took another pause to tease it with her lips and swirl her tongue around it, earning a louder groan and a strong throb, before she pressed to the base, her muzzle buried into his sheath.

Now it was Deepy's turn to moan. This was better than she imagined. Her throat had never felt quite this spread before, and his tip had reached a new distance in her throat that others hadn't. Everything about this cock was different from the others. Not only was it bigger, but its throbs were heartier, the nuts below hung lower, heavier, the precum tasted fuller, even the smell was more refined, more masculine somehow. She had been sucking colts' cocks all her life, but now she had her throat full of real, one hundred-percent, grade-A, thick, juicy, stallion cock, and she loved every inch of it.

She twisted and bobbed, slurping and sucking, pulling out every last trick and technique she knew for pleasing stallions. She wanted to give this stallion the best blowjob she had ever given. She wanted him to unload that great sack directly into her stomach, to grip her mane and thrust into her face while he called out.

She trembled when she felt his hooves against her head. "Ohh, Deepthroat Cockslut, you are amazing," he moaned. He had never used her full name before, too embarrassed to say it out loud, but just the sound of it in that dark, deep voice of his made her shiver with arousal.

She felt him buck into her mouth, mashing his sheath into her muzzle, and she allowed him, letting her lips do the work as her tongue wrapped itself around the thick shaft in her throat. He was moaning loudly now, thrusting into her, his grip in her mane getting tighter and tighter. She moaned back with every thrust, letting him know just how much she enjoyed his roughness, his pleasure.

"Deepthroat..." he moaned. "I think-"

He gasped sharply, and she felt his cock give a heavy throb. It was coming, and much sooner than she expected. He seemed to lose control of himself, fucking her face as he pulled at her mane to force every last inch of his mighty cock into her throat. With moans of pleasure, she let him. Her own pussy was dripping, and her mind was going blank with arousal.

With a splatter of her juices and a torrent of his cum, cries from each of them, they came together. He unloaded into her, giving strong bucks into her throat at first, until he settled a little, letting his cock pulse in her, as she held still, not wanting to overstimulate him as her own body writhed and shuddered. His seed was strong tasting and heavy, and she could feel the weight of it in her stomach, even as his balls continued to pump it into her. This was a real stallion's load, and she was happy to accept every drop.

When he pulled out of her, they were both gasping. He looked at her with a mixture of horror and incredible satisfaction, still swallowing nervously as he tried to regain his composure. But Deepy played her part well. "Did I pass?" she asked.

He nodded. "Yes. Yes you did."

They didn't get caught. Deepy never told another soul, and the two never exchanged more than knowing gazes for the short remainder of the school year. She knew how much he had risked in allowing her to do it the first time, so she bought him some flowers at the end of the year as a gift, with a thank-you card tucked in. He would know what she meant. After all, it had been her idea, and it was very sweet of him to act out her fantasy like that.

Sure enough, Deepthroat Cockslut did make valedictorian. She decided not to say anything original or groundbreaking in her speech. After her full name was announced at the podium, nicknames not allowed, and she heard the great gasp, she knew the parents gathered would be too busy gossiping to even hear what she had to say. Her own parents, despite everything, were very proud of her.

But even if Mr. Amino was now only a very satisfying memory, a fantasy fulfilled for her, he left a mark on her. Even if Deepthroat Cockslut couldn't bring herself to say "no" to a stallion in need, he had shown her a more mature side of things, that there was more to sucking dick than desperate colts curious about the feeling of blowjobs. There was fantasy and communication and experimentation to be had.

He taught her many things as a teacher, useful information that would help her in her future career. But he also taught her how to take hold of her own sexuality, and that was a lesson that she would take with her every day.