Extra Credit

by RarityEQM

Rating: mature
Tags: Sex, Twilight Sparkle, Princess Celestia, My Little Pony: Friendship is Magic
Length: 3090

Another lesson for Twilight from Celestia

It's been a while since Twilight's last 'assignment' for the princess, and Twilight isn't sure whats going on.
She starts to worry it was a one time occurrence until she receives a summons to the palace...

WARNING
This story contains Futa! If that isn't your cup of tea, darlings, by all means do go ahead and skip...but don't complain in the comments about a futa story you choose to read.

It also contains: Humiliation, oral sex, teasing and a fat pony dong on a girl.

Published 2015-08-30 15:00:02 UTC
Last updated 2015-08-30 15:00:02 UTC

Extra Credit

The grand hall of Canterlot castle had always been Twilight's favorite. On the days she was able to visit with the princess when she was younger, she'd happily sit next to the throne and read for hours on end, while the princess took care of royal duties. She was happy as long as she was with the princess, as she had been her entire life. Happy as long as she was next to the princess, that is. So much so, that she found it odd, that she felt odd, visiting now.

She walked in as usual, trotting across the red carpet in slow, easy steps. The guards ponies remained at their posts, staring straight ahead like life-like statues. The didn't move, flinch or even breathe, so it seemed, but Twilight knew better. They were tense, with cat-like reflexes which sprang into action the moment something disrupted the serenity of the hall.

"Ahh, Twilight, thank you for dropping by. I have a matter to discuss with you, if you please." Said the shining goddess sitting on the throne in front of her. Like always, princess Celestia had a warm, inviting grin etched over her face, but Twilight sensed something more. Something different about her- almost like a predatory gleam in her eyes. Regardless, Twilight approached the throne and gave a bow, while silently awaiting her task, whatever it may be. Celesta grinned.

"Please, Twilight, closer. You know, like when you were little." Celestia chuckled, and legitimately giggled when Twilight pranced up to stand next to her. Like when she was a foal. It felt wonderful to both of them.

"I have a very special assignment for you Twilight. First, I should like you to sit. Here, if you would." Celestia whispered, taking a step to the side and offering Twilight the royal throne. The purple prodigy gawked. To sit upon a Princess's throne was a grave transgression that was on par with treason. She winced and glanced at the princess, who quietly nodded her head.

"B-But Princess..." Twilight sputtered, only to have the princess shake her head quietly, and point her hoof at the throne.

"That's right, butt goes there. Well done Twilight." She said in a sing song voice. The kind she used to use when Twilight was much younger, and completed an assignment. The little unicorn blushed faintly and bit her lower lip as war bloomed inside in her mind.

I can't sit on the throne! It's against the law
But the princess asked me too
But it's still against the law
The princess makes the laws
What if she's testing me?
Am I supposed to resist?
Wait, what if I'm supposed to follow her orders
I always follow the princesses orders...

Nervously Twilight approached the grand throne, which rested the royal rump on multiple occasions. A goddess had sat in this very spot and delegated an entire kingdom. None were to dare seat themselves here, yet here Twilight was, slowly planting her own tushy gently on the cushion.

The hall suddenly looked different, although it didn't seem that different. It felt like something had changed. Decisions had been made here everyday. She felt powerful and smiled impishly, twisting to beam a grin at the princess, who wore a disgusted frown.

"Twilight?!" She gasped in horror. The room echoed with her voice and she immediately shook her head. "How...How, DARE you...that is MY throne!" The princess snapped, forcing Twilight's ears to flatten against her skull. No! No, no! It wasn't supposed to be like this?! What was going on?!

"Y-Your highness! I- I didn't mean to..." Twilight sputtered nervously, feeling an icy cold shiver race down her spine. She tried to get up, but found Princess Celestia's hoof holding her securely in place.

"Yes, you did. You planted that naughty bottom of yours where you know it shouldn't be. You are breaking the law! Such a heinous crime demands punishment. I'm sorry, but you know better than that." The princess corrected. Twilight tried to sink down deeper into her chair with a whimper. She didn't know what to do- the princess had told her..."

"Perhaps you deserve a firm spanking in front of my guards, here." She said, gesturing to the two frozen statures, staring straight ahead. Twilight perked her ears curiously. A...spanking? If that was the worst she was going to get, she could consider herself getting off easy! She didn't know why the princess put such emphasis her guards though. Sure, the idea was embarrassing; two of the royal soldiers watching the princess's prized pupil being spanked like a naughty little filly. Rumors would get around, everyone would know she got punished. A shiver raced down her spine.

The princess paced in front of Twilight slowly, letting the tension in the room fill. She would walk a few steps, and glance at Twilight, then walk a few more and ponder. Finally she shook her head and returned to standing in front of the purple pony.

"Twilight sparkle. I'm ashamed of you. Breaking the law is a significant crime. Do you hear that young pony? You committed a crime." Celestia said, her voice harsh and stern, but a few octaves lower than the way the princess was speaking before. The little pony whimpered quietly, nodding her head as the princess put more and more emphasis on how horrible it was. Twilight, however, found it odd that the princess didn't specify what the crime was. She just kept repeating that Twilight had been a naughty girl. She'd broken the rules, and broken the law, and turned herself into a filthy criminal. Twilight couldn't help but squirm in her seat. She'd never been punished before- not at home, and never at the castle. Never got grounded, never spoke out of turn, never caused any trouble. All of this was a new experience for her, and all of it delivered by Celestia herself. Twilight drew in a heavy breath. Why was it getting hot in the room?

She felt it the same time as the Princess saw it.

For a moment, her body felt funny. Fuzzy, like all of her senses were muted. But only for a second as it only took a second, for the spell's effects to occur. A transformation relapse of a previously cast spell. A spell she certainly botched if she were having relapse occurrences. In her lap was now quite the sheath. Thick, full, and the head of a dark pink shaft just starting to peek out. She had a fat pair of plump, heavy balls just underneath and a new musky scent to go with the set. She wriggled, her cock already starting to stiffen as the princess scolded her.

"Ooooo....Why, there it is..." The princess cooed quietly, watching in delight as Twilight shyly started to blush. It was happening again! No, this was different. This was much different. It was happening in front of the guards! . Well, technically behind the guards, but it was still an audience to a miscast spell. They were going to see! The were going to see her dick and everything she had to hide and she would die of embarrassment. She'd try to explain it wasn't supposed to be there, that she'd messed up a spell, but they wouldn't believe her. They'd tell everybody about her little secret and she'd would never hear the end of it. Twilight shuddered again, biting at her lower lip as the Princess loomed over her.

"Is that what I think it is? You ARE a naughty little filly aren't you? " Celestia hissed. By now Twilight's erection had reached a full state of stiffness and bobbed proudly in front of Celestia. Who was grinning. An awful lot.

"In front of the guards? And here I thought you were shy..." The princess continued, adoring the way Twilight squirmed and wriggled on the throne. Celestia leaned down, looking over Twilight's begging shaft, and let her breath wash against its length, before planting a single kiss on the head. Twilight gave an 'eep' at the sensation racing through her and the Princess leaned back, perking an eyebrow at Twilight.

Twilight's eyes widened. She got it now, and her penis throbbed because of it. Her breathing was getting heavier and heavier while the princess scolded her. She was shy! Very shy when it came to sex. She was inexperienced and curious and awkward, and...and she felt like an embarrassed teenager again. Quickly she glanced at the guards. They hadn't moved an inch. Not even in the slightest, but that didn't matter. Princess Celestia could order them to turn right around if she wanted to. Could order them to hold her down for that firm spanking Celestia promised, or have them watch while she gets milked dry by her favorite teacher. As Twilight shuddered, a droplet of precum started to form at the tip of her shaft.

"You're always so full down here...don't you ever masturbate?" The princess cooed, and she knelt down, slowly squeezing the heavy orbs of Twilight's balls in a grasp of magic. Twilight wanted to say something about how sperm isn't stored in the testicles, but all that slipped past her lips were choked little squeaks of pleasure. Another tender kiss, soft and sweet, Celestia's lips had an eternity of practice. Slowly she teased around that heavy sac, watching in joy the way Twilight's cock wobbled in with every kiss. It was twitching more and more with need, as Celestia explored the expanse of Twilight's balls. Each kiss longer than the last, suckling gently at the sensitive skin, before moving to a different spot.

Twilight arched her hips, leaning back into the throne helplessly as Celestia worked her over. Each terrible, drawn out teasing kiss was making her buck her hips, and whimper as quietly as she could. The princess was giving her a blow job in front of the castle guards! They were right there! Right there! The phrase kept repeating in her head and the princess slowly worked her way up Twilight's throbbing need.

"I asked you a question...don't you ever masturbate?" Princess Celestia cooed, forcing Twilight's eyes to widen in humiliation. No...no she couldn't...she couldn't be serious... But the princess had stopped her wonderful kissing (A kissing that wouldn't continue unless Twilight played along) and glared at Twilight. The little unicorn gave a helpless whimper, and arched her throbbing cock in the air. Celestia ignored it, but started to grin again as another bead of pre rolled down Twilight's penis. The poor mare threw her head back with a desperate whine, and shyly nodded her head.

"Yes, I...M-Masturbate..." Twilight sputtered softly. She glanced at the guards who remained staring straight ahead. Twilight looked away, bashfully, feeling even more at fault for what was happening. She had no idea how the princess was manipulating her so well, but she felt like a puppet on strings. Her control completely gone in this trap the princess put together. She couldn't go bolting out the door with her fat cock wobbling everywhere. She was to horny to focus on a teleport spell. Celestia was cruelly forcing Twilight to reveal some of her most intimate secrets to two perfectly good strangers! A little jolt of pre shot out of Twilight's needy shaft.

"What was that? I couldn't quite make it out." Celestia purred, a devilish grin wrapped around her face. Twilight would have traded every inch of magic she had for the world to open up and swallow her whole. Celestia had planned the perfect trap, and caught the perfect prize. The first assignment got Twilight curious to be under her control, but this time Twilight was completely captivated by the idea.

"I...I masturbate!" Twilight barked, far from her normal speaking voice. There was no way the two guards couldn't have heard that personal announcement. They continued standing though, ears perked and twitching on occasion. The stories these two were going to have...Her begging erection gave another jolt of pre. She was building up pressure at a phenomenal rate, and her cock lurched forward again.

"Good girl." The princess cooed, taking the head of Twilight's cock into her mouth, slowly swirling her tongue over the plump glands with no delay. Twilight sputtered helplessly as the Princess raced laps around the head of her cock with that fantastic tongue of her's. Slowly, she pulled more and more of that plump spire into her mouth. Inch after inch of her cock disappearing past those heavenly suckling lips. Twilight rolled her head back and moaned. She no longer cared if the guards heard her or not. She was getting very close to a climax and she was eager for the Princess to continue.

Celestia, however, had an eternity of skill. Poor Twilight didn't have a prayer. She watched in a trance as the Princess took her to the root, nuzzling the purple tuft of pubic fur that was just above her length. Her lips were like magic, and that tongue- That amazing magnificent tongue! Twilight's left leg twitched helplessly as the Princess started to roll her neck, bobbing her head sensually over Twilight thick perfect girlcock. The poor pony felt like she were going to go insane. Pleasure was building, and building, and building throughout her body. Every movement of that gorgeous tongue sent jolts of electricity to every inch of her frame, and the Princess knew just how to hold it there. One...Two...five minutes of edging. Teasing and slurping a hopelessly overstimulated Twilight Sparkle. By the end of five minutes, Twilight as thrusting her hips in little spastic, frantic juts, and begging quietly.

Just underneath the chanted whispers of "Pleaselemmecumpleaselemmecum" Princess Celestia gave a devious grin. Oh, that poor, poor pupil, at the utter mercy of a millennium of talent. Knowing just when to back off and build up until they were ready to pop. Oh, yeah, she was good. And she knew it.

Ready herself to see the fruits of her labors, Celestia started humming. Quietly. Soothingly. It was a glittering charm of a sound, and made Twilight's eyes cross. Oh, it was amazing before, but now there was vibration! A great and terrible vibration that traveled though her cock and stimulated her very core, and all of it was bubbling up into a sizzling volcano of force! And all of that coupled with the terrible edging, Twilight gave a soundless scream. Oh she tried to, but nothing came out, her voice muted out of the air. Celestia wanted Twilight to cum- and so she did. Burst after radical, wild burst of Twilight's seed splashed across the Princess's tongue. She swallowed every last count, even teasing her tongue in slow, tender circles around the head of Twilight's penis to coax out more. Finally, a lewd, wet slurp crowned the ending of the situation. Celestia pulled back from Twilight's member and grinned up at the girl.

"I suppose I'll have to add 'Immoral fraternization in front of royalty' to your charges. You're such a dirty girl. Cumming right on my throne." Celestia whispered shaking her head. "...Twilight?"

The world was a gleaming sea of bright white stars! Pretty ones that dazzled into smaller ones when they were touched. They covered the world and Twilight never felt so happy or satisfied after an orgasm. She couldn't feel her body in the slightest, and it seemed as if gravity's effects on the world were just a polite suggestion. She was floating in a sea of tranquility before reality started to set back in. She blinked her eyes, and sat up catching sight of a curious Celestia.

"I will personally deliver your punishment myself. For now, you are dismissed!" Celestia barked with authority. Twilight's ears splayed against her head, and she slowly pulled herself off of the royal throne and only wobbly legs. Taking a second to find her footing, Twilight began to trot down the stairs, only to stop, frozen on the staircase. No...Don't look at them. Don't even turn around...

She couldn't help it.

Twilight stole a glance behind her, scanning the guard's face for clues that they'd heard anything. The guard glanced towards her, just for a moment and raised an eyebrow, before his gazed returned to straight ahead. He knew! Now she was sure of it! Twilight blushed a furious shade of crimson, and trotted quickly out of the room and out of sight whimpering the whole way. She had to find a place to hide, a place to get rid of her...sheath? It was no longer there. Thankful her climax must have triggered some sort of re-relapse of the original spell, Twilight hurried along, but couldn't help but to wonder if this would be considered extra credit.

Alternate Ending

Princess Celestia grinned her beautiful grin, and stood up as her faithful student skittered out of the room. She slowly bounced down the stairs and turned to face the guards. She gestured to each one of them, and then leaned back on her hind legs to use her forelegs to mimic taking off a hat.. Slowly, the two guards removed their helmets and tilted their heads at the Princess who smiled brightly.

"Thank you for your service to the kingdom. You are relieved of your post for a well deserved break. By the way, how did you both like the new armor from the smith?" She smiled. She'd always thanked the guards who were posted as her's personally. The guards pony to the left of her shared a grin with the one to the right, and dipped his head towards her.

"Well, your highness, the new armor is somewhat heavy, and although it's really well armored, it's almost impossible to move in!" Said the first one. The second nodded his head in agreement.

"Yeah, and these new helmets prick my ears, it's impossible to hear anything through 'em!" said the second guard. The princess frowned, slowly shaking her head.

"That's terrible, I am dreadfully sorry. I was assured these new designs were perfectly suited for the throne! I shall let the royal smithy know at once!" She elaborated. The two guards shuffled out of the room, and while Celestia shook her head and they wandered out of earshot.

"And then let him know I'm giving him a raise."

Author's Note

I don't know where this came from. Maybe I'm riding the surprise hype from "Nope. I'm done" And want to see my numbers shoot up like that again. It's fun. n.n
. As always, any offers to edit are much appreciated.