Sunset Shimmer stood a distance away on her hind legs with her back resting against a lamp post, her forelegs crossed over her chest out of habit, one she had picked up in the human world. An amused smirk formed on her muzzle as she watched Celestia getting fucked senseless by some dark blue coated pegasus stallion with a dark red mane that she didn't really care about, although she had to admit that he was somewhat ruggedly handsome. All she really cared for in the moment was for him to finish up so that she could take her turn having her way with her former mentor. She'd always fantasized about the solar princess; about how she would love to dominate the mare, and now she was offered that opportunity on a silver platter. Normally she was not one for doing such things in public, not that she was a prude, she just liked her privacy. Though when she heard about Celestia's plight, along with the rumors about her keeping a thestral mistress she had to get in on this... she had to use this situation for a little well-deserved, humiliating and hopefully mutually pleasurable payback.

She had gotten Cheerilee in on this, or at least in part. She simply needed to cast a single spell to set up and clean her decor, which was actually furniture borrowed from the detention room in the Ponyville schoolhouse. What better way to humiliate your former teacher than to make her the student and punishing her for breaking your rules. She let herself smile at the thought of her ‘revenge’ set up, the only thing she herself, had to prepare was the spell to set up the classroom setting with her favorite bondage equipment. Normally she only reserved it for use on Twilight but they had agreed this would be an acceptable exception to their little study in the magic of friendship with benefits.

Sunset cast a glance to the clothing that was levitating in her brilliant teal aura, a uniform, her old uniform to be exact from when she was still a student at Celestia's school. Although she had enchanted it with a simple cantrip that she had learnt from Twilight, called ‘one size fits all’, not too long after returning to Equestria. She was truly grateful for it, without it she would not have been able to wear the jacket she had taken a liking to in the other world.

Her eyes returned to Celestia being fucked like a needy slut by that stallion. She grinned watching him furiously buck his powerful looking legs. He trapped her mane between his teeth, pulling back to make for a lovely display of masculine dominance. The simple sight of it caused a familiar tingling sensation in her already moistening pussy. She slowly trailed a hoof down to her marehood, gasping as she gave her moistening slit the barest of touches. She leaned against the pole of the street light with more of her weight panting lightly while slowly dragging her hoof along her delicate folds. A loud primal groan of pleasure pulled her eyes back to the stallion as he slammed his entire length into the Princess' already well used pussy, a mixture of marecum and delicious sticky stallion cum pouring from her former teacher's snatch.

Sunset approached the spot where the stallion had quite unceremoniously thrown the Princess aside like a well-used sex toy. She powered up her horn, and released a simple cleaning spell, its soft teal light enveloping Celestia's prone, panting and mewling form. There was no way she would settle for a dirty mare to fuck.

She threw the enchanted school uniform in front of Celestia. It was a simple navy blue top, with a matching skirt, a set of simple white and blue striped socks and matching crotch-less striped panties. The top had the symbol of Celestia’s School for Gifted Unicorns over on the left side of the chest. It took Celestia’s lust addled mind a prolonged moment to finally notice that the crest of her school had been perverted with the brazen text, 'Princess Sunset's school for dumb bimbo sluts'. Sunset stood, grinning down at Celestia, the normally untouchable Princess of the day. She motioned to the school outfit with a hoof. "Get dressed you're late for class, slut." She growled dominantly, trotting off away from the princess, her tail whipping across Celestia's flank.

Reaching the desired grassy area that she had picked out, she slowly started to weave the specially designed spell in her mind, mentally working through it's moderately complex formula. With the tell-tale sounds of teleportation, the furniture that she had borrowed was arranged in the form of a makeshift outdoor classroom; something that was not unusual during a particularly hot summer. Sunset Shimmer took a seat on the edge of her desk and slipped on a pair of simple fake glasses with plain lenses. She pulled her mane back into a ponytail, aiming for the sexy substitute teacher look. She was about to shout at Celestia to hurry it up when she noticed her new student approaching slowly, her cheeks burning brightly.

Celestia never really felt self-conscious. She always prided herself on remaining calm and composed, even when the situation was particularly embarrassing. Like today, having to resort to asking her ponies for help with something that was normally handled by a few hoofpicked Solar Guards. Yet this, walking in an old school uniform of her own school took the proverbial cake. She approached Sunset feeling a deeply nestled sensation of... she didn't quite know what it was. Nervousness? Trepidation? Excitement? Maybe a mixture of those things, it was something she never felt before, not even when it came to her kinky experiences with Night Glider. Perhaps it was the confident and subtly dominant smirk on Sunset's muzzle or the look of lust burning in those mesmerizing teal eyes of her hers. Maybe it was the way Sunset sat on the edge of a desk, looking over her glasses, radiating power and control. Whatever it was, it made Celestia feel far smaller and more vulnerable than she ever had before.

"Ah, Miss Tia, you finally decided to show up," Sunset started off, keeping her voice level with a slightly scolding edge to it. It was the same voice that Celestia had used on her countless times before when she did something that had been considered 'unacceptable' from a personal student of hers. "I guess you were too busy whoring yourself out to your subjects to bother being on time." She stated, motioning to the only student’s desk in the setup that was large enough for the alicorn to take a place in.

"Suns-" Celestia wanted to say, but was silenced by one of Sunset's hind hooves being pressed against her muzzle. She felt the burning heat of embarrassment build up in her cheeks at the rather unceremonious and degrading way to silence her. Her former student simply pointed to the chair with a small frown of disappointment, making it clear that she was having none of it.

"I said sit. And that is Miss Shimmer to you, slut."

Celestia silently approached the chair, pulling it back to reveal a faux stallionhood magically glued to the seat, bobbing back and forth obscenely before her. A sheen of lubricant was just about visible, reflecting the bright sunlight. She swallowed nervously and lowered herself down onto the thick dildo, unable to hold back the lewd moan of pleasure as she felt it pushing deeply into her needy, burning pussy. She let out a low sigh as she felt something cooling her insides for the first few seconds. The sensation of being spread wide open by the toy, combined with the cold lube was quite refreshing. And yet the burning, maddening, need of her heat slowly started to encroach once more but unlike before the sensation was so much worse now. She rocked herself back and forth on the toy with a low whine escaping her lips, trying to soothe that horrible need burning inside of her

"Now then, class is in session!" Sunset announced, crossing her hind legs, making sure that Celestia got a good view of the small puddle of arousal forming below her. Sunset grinned watching her Princess shamelessly rocking herself back and forth on the toy trying to quench the intense arousal in her slutty marehood. She relished in the desperation that was slowly showing itself on Celestia's face. "Ah, good, I assume from that look your punishment for being tardy is working." She chuckled darkly at the mare, watching her shiver.

"In front of you, on the desk, you will find the rules for my class. If you would be a good slut and read them out for every pony?"

"Y-yes Miss Shimmer." Celestia said, her voice quivering with her desperate need.She pressed her thighs firmly together, and cooed lightly in satisfaction. That burning heat between her back legs was still present, constantly reminding Celestia of her needs and desires but rocking on the toy seemed to help dull it a bit. Taking the paper, she turned it around reading it before she started to recite it aloud. Her cheeks burned progressively hotter in embarrassment as the realisation of being owned by her former student slowly sank in.

Rules of Miss Shimmer's class.

(Do not read out loud.) If for any reason this becomes too much for you and you want it to stop, simply call me "Miss Sunshine" rather than Miss Shimmer.

1. I will always address my teacher as Miss Shimmer.
   
2. I will thank anypony that uses me, with due respect.
   
3. I will never try to touch my teacher or one of her aids without permission.
   
4. I will obey my teacher's commands and those of her aids without hesitation or question.
   
5. I will not use my magic without permission under any circumstances.
   
6. I will never touch or pleasure myself unless given permission.
   
7. I will always be willing to please at all times and never refuse anyone who wants to use me.
   
8. My name, from this moment to the end of this lesson will be Sunslut.

Failure to follow these rules will result in punishments decided upon by Miss Shimmer.

"Do you hear that mares and gentlecolts?” She announced to the small crowd that had formed around their little set up most of the ponies were waiting for their turn to help themselves to the Princess were watching their display. “I think we are going to need some volunteers later on." Quite a few of the ponies were shamelessly masturbating to the hot scene of Sunset humiliating her teacher. One particularly well hung stallion,bounced a dark pink earth pony mare up and down on his throbbing member, her fur was matted down with a sheen of sweat, and her tail was whipping back and forth in excitement,her green eyes constantly focused on the session between Sunset and Celestia.

Having read the entire thing out loud had only made Celestia more excited. She was now slowly bouncing herself up and down on the dildo, rutting herself senseless in a desperate attempt to satisfy that burning desire in her dripping wet pussy, augmented by whatever kind of substance Sunset had lubricated the toy with. She shamelessly moaned out her pleasure but then it dawned on her... Especially when she caught the look Sunset was giving her. It was that piercing neutral stare that she used to give the mare when she had been a small filly attempting to steal the entire cookie jar from the kitchen. She had fucked up and broken one of the rules just after having finished reading them out aloud. She opened her mouth to offer an excuse however Sunset was upon her in seconds pressing a hoof to her muzzle.

"Shut up, Sunslut. Its punishment time for you."

The moment Celestia heard the low and dangerous purr in Sunset's voice she knew she was in trouble. Not that she could have ever helped herself from riding the large toy buried inside of her burning, needy snatch. Although she could hazard a guess that it was never the point for her to even succeed at following the rules considering her faculties were quite impaired by the worst heat of her life. Sunset was quite effectively using that to her advantage to invoke a whole new sensation of submission from her. A kind of submission her Mistress' more physical dominance couldn't invoke. She felt small, she felt like a little filly standing in the presence of a scolding parent. In the moment she wasn't a princess, or a teacher, she was a student... and Celestia relished in the freedom it gave her.

Sunset grabbed the mare by her mane with a wicked grin playing on her muzzle, though she couldn't hide the caring look in her eyes from the princess. As they locked eyes they made an unspoken promise with each other, to trust in one another, for Celestia to willingly giving herself up to her. In turn Sunset accepting responsibility for Celestia's wellbeing, safety and pleasure. It was a short moment, but one that both mares needed to share, they both knew the importance of that.

Without any further delay she dragged Celestia over to the teacher's desk, throwing her over the top without ceremony. Not an instant later, soft leather restraints bound her fore hooves to the desk. Celestia’s mind reeled from the swiftness of her bondage, she had barely enough time to even register Sunset kicking her hind legs apart binding them to each of the desk legs, tugging at the bonds to make sure she was secure. Celestia let out a small whimper. She had never really been tied up in such a manner, true her Mistress had pinned her down, but she had never been bent over the desk and secured with little to no wiggle room. A cold sensation on her horn followed by an emptiness inside herself as her magic was cut off, told her she was now entirely helpless and at Sunset's mercy. A shiver of excitement ran down her spine.

Sunset took a moment to admire the regal princess in her bondage, she couldn't help but moan, feeling all that sexual heat building up in her pussy. She wanted to ravage the helpless mare and have her way with the Solar Diarch. But she had to wait. As much as she wanted to be selfish, she couldn't give in to those impulses... yet. No matter how much her libido was egging her on, she had to be strong and show the proper restraint a dominant had to have. This was about Celestia's pleasure, as much as if not more than her own. With a smile she approached the mare, leaning in to softly and teasingly moan into her ear, electing a needy whimper from her student. "You were a bad mare Sunslut, but I still have a gift for you." She purred offering Celestia a good view of a simple red collar. The collar had a pendant engraved with the simple name 'Sunslut', with a message on the back reading, 'If found wandering alone, please return to Sunset Shimmer.' She watched the Princess' cheeks turn an adorable shade of red as she slipped the collar around her neck, magically locking it in place. Sunset relished in her students radiant embarrassment.

She tugged on Celestia's tail, pulling it along her back to the collar binding it there nice and securely so It wouldn't get in the way during her student's punishment. "Hmm... you look like a proper slut now. Can you feel it? All those eyes on that large plush flank of yours?" Sunset purred into the mare's ear, giving the fluffy appendage a soft little nibble, and smiling at the soft gasp of pleasure emanating from her student. She felt Celestia's hips desperately rocking against a non-existent cock her need was building; even the simplest of touches was enough to drive the lust crazed mare wild. For a long moment she did nothing, enjoying the moment of listening to Celestia's panting breaths, her needy little whimpers and whines, the intoxicating smell of a mare in desperate need of a good rutting and the frustrated looks she got for denying the slutty mare her needed pleasure.

Celestia couldn't take it anymore, this was going on too long, she needed to feel pleasure, her burning marehood desired, no, demanded to be pleasured. It was an all-encompassing need, overriding any sense of logic in her mind that told her not to speak out and demand a rutting.

Unfortunately for her that was exactly what she did in that moment, her mind wasn't even aware of it as the words left her mouth. "Sunset Shimmer! You better stop being the procrastinating little bitch you are and serve your princess or so help me I will-" that was as far as she got, her eyes meeting Sunset, the calm fury on the mare's face was an intimidating sight in and of itself. She was at her mercy. Her body was hers to pleasure, or to deny as she saw fit. That was after all the Mistress' right. Misbehavior would be punished and demanding something was especially not tolerated. Celestia went from being in a little bit of trouble to having to deal with an offended Mistress.

Sunset Shimmer did her best to maintain that look of calm anger while in fact she was celebrating her little victory over Celestia. She had done something only a few ponies could ever boast to have achieved: break Celestia's facade of eternal calm. After mentally going through her little victory dance, she needed to payback Twilight for even introducing her to something that childish, she stroked a hoof slowly along Celestia's side, taking in the silky smooth texture of her coat. She took her sweet time with getting to the Princess' flank, letting her stew in her own realisation of just how much trouble she was in now; breaking another rule of their game and breaking an unspoken rule of BDSM in general.

Celestia was contemplating what would happen to her, what Sunset would do as a means to discipline her. She was pulled from her train of thought as something slapped her across the flank with enough power to sting, though not enough to leave a lasting blemish over her cutie mark. It was followed by another, more intensely biting blow now that she was paying attention. She felt her ample flank rippling with each impact of Sunset's hoof.

Celestia blushed brightly, her self-consciousness urging her that she should not allow herself to be degraded before her subjects. She was being spanked like a little filly, like she was nothing more than a little brat who had badmouthed her mother. Each firm strike of the hoof to each of her flank cheeks drove home a deep seated feeling of shame and humiliation, along with the unwanted feeling of intense arousal adding to the already desperate need between her hind legs. Celestia could feel the moisture of her arousal dripping between her thighs, coating them and the socks that she was wearing, making them glisten in the afternoon sun. She felt like she could die of shame then and there.

"Ooh what's this? The slutty little filly is getting even wetter!?" Sunset announced loudly, for every mare and stallion to hear. She was met with a mixture of cheers and laughter at the comment. "Seems our prized, prim and proper princess is a slut for a good spanking!" Laughing quite loudly herself she slapped her on the flank once more, electing a squeak, followed by a low little moan of pleasure from the Princess. Taking a moment, Sunset levitated a large ceramic bowl over to a group of stallions shooting them a wink as she mouthed the words 'fill it up boys'.

Lost in a world of humiliation, shame and intense growing pleasure Celestia found herself not caring anymore about being watched as Sunset made her submit and yield herself. All she could think about in the moment was she wanted more. She needed, no, she craved more of Sunset’s humiliating and degrading treatment. The loss of control, being powerless to stop a mare that was weaker than herself was a thrill in and of itself. Her heat hardly even mattered in this moment. She simply focused on that exquisite mixture of pain and pleasure the spanking provided. Her flanks felt like they were radiating heat, the light breeze stinging her sensitive flesh in just the right way.

It wasn't long before Celestia felt a familiar building sensation in her core. "M-more! P-please Miss Shimmer more!" She cried out, without even thinking of what she was doing, all she wanted was release, she could climax from this if it continued. And just like that, it stopped, leaving Celestia hanging close to the edge. For a moment she wanted to complain. She wanted to scream at Sunset to continue. She wanted to demand her climax. But she didn't, as this was a punishment. A punishment she had brought on herself by doing just what she wanted and desired to do right now; so she restrained herself.

Sunset grinned. It was lovely watching Celestia squirm, swaying her lovely spankable hindquarters to and fro. She admired her student for a moment longer, being in control over the mare that had always controlled her life, that had always disagreed with her methods and approaches. She loved how desperate the simple act of denying the princess climax reduced her to a whimpering needy slut. She almost took pity on her sub, but she couldn't offer it. The last thing she would want to do is show weakness and break the illusion of her control. All control was with Celestia, after all. One simple word and it would all be over. She leaned forwards, biting and tugging at Celestia's ear with that low dominant growl of hers, a hoof finally pressing against her pet's pussy, slowly rubbing up and down with the barest of touches, wanting to tease and not actually pleasure her. Where was the fun in pleasuring her during a punishment? "Repeat after me Sunslut, and keep repeating it whenever I flick your slutty little clit." She stated firmly, looking in her eyes with a broad grin. "I am a naughty slut." She punctuated her order with a firm flick of the mare's clitoris electing a loud cry of pleasure.

Celestia’s mind raced, the sudden jolt of pleasure had scrambled the last semblance of coherency to any thoughts she might have. Instead of thinking she yielded herself utterly to Sunset. "I'm a naughty slut!" She felt good giving in, it was calming and even relaxing, all her worries flowing away. There was one thing, or rather one mare she needed to focus on. In that moment Sunset was her whole world, even the crowd was simply background noise at this point. Each flick against her little love button coaxed a blissful squeal of pleasure from her and each time, she repeated the phrase she had been told to recite. The light teasing and each heightened spike in pleasure, combined with her single phrase was an almost hypnotic pace for Celestia. The message was driven home in her mind as she repeated it as frequently as Sunset desired; she was a naughty slut. She needed to be punished. She wanted to be punished for being a naughty slut.

Sunset was in a state of bliss all her own. She was reveled in the rhythm she and her student had found, though more importantly she was loving the attention and cheers the crowd was showering her with. She smiled and then with one last rub against Celestia's slick marehood she coaxed out the last squeal of lusty pleasure, along with another repeat of her student's little mantra. She grinned in satisfaction, watching Celestia desperately trying to rub back against the hoof that was long gone. For a moment she felt sorry for the mare, but then she remembered the payoff that was coming and how worth it, it was going to be. She had lost count when they had gotten to ten times; not that it mattered. She simply sat her flank down on the desk, kicking her hooves idly offering her cum covered forehoof to Celestia's muzzle. "Clean it slut." she commanded, quickly casting her gaze over her shoulder, watching the group of studs filling the bowl with thick robes of their seed. She felt a shiver running down her spine, and for a moment she felt a deep longing to take the bowls place; to be showered in cum.

Celestia simply stared dumbly at the hoof for a long moment, her mind having stopped functioning a long time ago. Through the haze of lust and desire, she simply leaned forwards slowly dragging her tongue along the yellow hoof, savoring the spicy taste of her own juices. Looking up she locked eyes with Sunset's, that calm self-assured smile that was natural on her former student- no, on her now teacher's face was cast in a different light. What normally had meant her confidence in magical arts now represented her confidence in controlling her. It sent a shiver down Celestia's spine, her breathing quickened ever so subtly as she lapped away hungrily at the hoof of her teacher. Her mind now fully having come to a stop. There was no need to think anymore, there was nothing to even ponder, that was her teacher's lot; all she had to do was follow her orders. The relaxing lack of control was perhaps the most pleasurable experience she'd had, if it wasn't for that burning sensation in her marehood she would have even forgotten about her heat.

With a smile, Sunset petted the princess through her mane, not saying anything, simply letting the mare enjoy the sensation. Her eyes never straying away from those pale, lightly faded magenta eyes, recognising the look of a mare giving in utterly to her submission. It was one of the most beautiful sights that she had been able to witness in her lifetime. Watching the same mare raising and lowering the sun wasn't as beautiful as watching those eyes shimmer with happiness, watching the rhythmic rise and fall of her chest, the relaxed almost lazy and subtle flex of her wings. "You're beautiful like this, Tia." She whispered barely above a breath, then finally breaking eye contact with the mare to glance at the ceramic bowl that she had handed over to the stallions.

Smirking just a touch, the group of stallions offered her a wink, the group's leader motioned to the bowl with his hoof, showing off quite proudly how much they had been able to fill it while Sunset had been otherwise occupied. She smiled as she levitated the bowl over to the student's desk Celestia had been seated at before. She placed a silver spoon besides it, setting the table for the last part of Celestia's punishment; lunch. Slowly, and very carefully she started to undo Celestia's bindings, holding the mare in her magic so she didn't fall to the ground. Celestia for her part simply gave her a confused look. She is quite adorable when she isn't trying to maintain proper decorum, submission looks so good on her, she should let loose more often like this. Then again, perhaps not this much. She mused to herself helping the princess sit on her own accord.

After getting Celestia sitting on her rump she leapt off the desk, slowly prowling to the desk, motioning with a hoof and with a simple little spell cleaning her special lube off the toy. "Sunslut, take your seat, and remember no riding that dildo without my say so," she instructed with a progressively growing grin on her muzzle. Watching the princess obey her without a moment's of hesitation, although the mare needed a moment to figure out how to orient herself and find her balance stumbling almost as though she was in the stage just between tipsy and drunk. She didn't keep Sunset waiting for long however, slowly lowering herself onto the large stallionhood with a sweet blissful moan, visibly struggling not to bounce herself up and down on the large plastic cock.

With a deep breath Celestia sat herself down, taking the last of the faux stallion's cock inside of herself, ever so subtly twitching in place. It wasn't easy to resist pleasuring herself, the temptation was high to buck the rules. However the urge to be obedient, to be a good mare for her Mistress was much stronger than when they had started this little session; it helped that the heat in her dripping pussy was somewhat soothed by having a stallionhood plunged inside of her depths... even if it wasn't real it would stave off the maddening burning and itch a little at least. It was then, and only then that she noticed the plain ceramic bowl with a creamy white substance in it. At first she wanted to protest, but that instinct got bucked aside quickly in her mind, instead she simply asked one thing of her teacher. "M-Miss Shimmer... is it, lunch time already?" She didn't even think about it. The question simply came to her then and there, she had accepted her role as student in this perverse little game and she loved it.

"Why yes, Sunslut. It indeed is already lunch time." She said without even missing a beat, her horn alight with it’s signature teal glow retrieving a riding crop for herself. "You have those fine gentle colts to thank for this meal, you better thank them all once you are done. Now get! Proper posture, you're a self-proclaimed "princess" after all." Sunset mocked, letting the soft tip of her riding crop slowly slide along her student's back smiling as she watched her straighten up. "Atta slut, you know how things should be. Now go on, eat your cream."

Clumsily, Celestia took a hold of the spoon in her hoof, she hadn't had the need to do fine manipulation with a hoof since the battle with Chrysalis when her magic burnt out. It was another tiny thing that she could add to the list of mundane tasks that were suddenly embarrassing to her. Not that she minded or even cared about her appearance at this point. With a genuine smile, she took her first spoonful of white creamy goodness as she leaned forward, only to feel a painful sting to her flank, almost dropping the spoon in response.

"I said proper posture, Sunslut! Don't you dare slouch on me."

"S-sorry Miss Shimmer!" Celestia cried out in response. She straightened her back, taking in deep calming breaths. She took the spoon and brought it back to her muzzle instead. After a moment of examining it she took the first spoonful of stallion spunk, savoring the bitter and salty taste that danced over her taste buds. She couldn't restrain the ensuing moan of pure delight, there was the subtle taste of sweetness lingering on her tongue. She really had to thank those stallions for this, they had clearly prepared for her the most delicious cum possible. Leaning forwards to eagerly take another spoonful she soon screamed out in a mixture of pain and pleasure as Sunset whipped her across the flank once more, or more accurately right upon her sun cutie mark.

"Posture... that's strike two Sunslut. One more time and you're not getting an orgasm. Be a good mare and eat your cum like the princess of debauchery that you are." Sunset lightly purred slowly trailing the outline of Celestia's cutie mark with the whip. There were subtleties she could probably punish, though the mare already had had more punishment than anyone rightly deserved with being denied her climax for... she cast her eyes to the town's clock tower to see it had been fifteen minutes already. Watching Celestia greedily eat the stallion spunk was actually quite hot, so when she was sure that the mare in question was too busy with her 'lunch' she formed a magical vibrator, slowly pressing it into her own needy sex. Biting her bottom lip to silence her squeal of utter delight she started slamming the toy roughly into her tight snatch just the way she liked it from her stallion lovers; hard and rough.

Celestia managed to make it through the rest of the bowl without incurring any more whippings from her teacher, for that she was thankful and more than a little proud of herself. She had done well, she had obeyed everything but one last part remained, her eyes wandered to the group of stallions that Sunset had said provided her meal. She offered than a radiant, though somewhat timid little smile. "Thank you very much s-sirs, for providing me with this lovely meal! I really enjoyed the taste of your cum!" She announced in quite a bubbly and somewhat sultry tone of voice. She was happy, truly happy with indulging her more lewd and submissive side, it was a freeing experience to give herself so wholly over to the whims of a mare not even one tenth of her age. It was exciting and naughty; she could feel her insides convulsing around the faux stallionhood.

"Oh good slut, Tia!" Sunset praised reaching over to give the mare a loving petting. Smiling as she watched how Celestia instinctively leaned in to the demeaning gesture, relishing in it. Even going as far as to nuzzle the hoof of her teacher. Sunset smiled; she was ready. Her former mentor, turned student was finally far gone enough into her submission that she would be allowed to cum. She savored the moment just a little bit longer before turning to the crowd to address them once more, though before she could actually say something a couple stood out to her between the mares and stallions.

This couple unlike the others weren’t engaged in idle chatter or ogling their princess in her submissive state; instead they were doing their own thing. The mare with the two tone blond maned was laying on all four hooves, leaning slightly to the side so she didn't put her weight on her obviously pregnant belly. She was busy being lost in her own world of submission as she fellated the stallion's impressive length with passion that would rival a religious mare. The same stallion, she assumed her master as he was holding the mare's leash, had been rutting Celestia before her turn leaving the princess nothing more than a panting drooling mess, one that Sunset had to clean up. She watched him, truly taking in his large muscular frame. Even for a pegasus he was on the stronger side, not so much built for high speeds but certainly a powerful flier and most definitely a powerful lover. The way he placed his hoof on the mare's head only so lightly showed his utter control over her and himself.

Pointing to the midnight blue coated stallion Sunset smirked just a little "You, good sir, you look like a stallion that knows how to tease a submissive mare." She said, her voice loud enough to be heard, but keeping to a low sultry purr; one that had tempted many-a-stallion to her bed chambers when she had been in need much like her princess was right now. "How would you like to enjoy this slut once more? Help me remind her were her true place is?" She watched the stallion's ears perk up, and a broad grin forming on his muzzle at the opportunity. The way she had sold it to him hit the nail on the head and she couldn't help but feel proud, even as the mare pouted, forced to stop her worshiping of the virile stallion's cock. With a grin directed at Celestia she motioned for the approaching stallion. "And there's my assistant teacher now. It’s about time that you relearned what the place of a mare is in society... and why this school exists in the first place, Sunslut."

Watching him approach, the sable stallion that had so roughly and unceremoniously used her before whispering those lewd comments into her ear was quite thrilling. She could feel her marehood winking against the faux stallionhood. The toy feeling so much smaller compared to the memory of that stallion now brought back to the forefront of her mind. She was sure this would be good. Very good.

"Hello again, Sunbitch." The stallion practically purred as he prowled around her, like a predator ready to pounce on his weak and tired prey. His prone wings twitching ever so slightly as if ready to run the mare down if she even dared to flee. Everything about the midnight blue pegasus screamed that he was in control, from the way he moved, to the calm yet commanding tone of his voice. "I see you've finally started to learn your place. You're only duty should be service to stallions." He announced, slapping the mare's crown from her head stippling her of the last of her regalia that marked her as a Princess. "Perhaps your sister should take over as queen of Equestria? You seem so much more suited for this."

Sunset took her place a little distance away, watching Celestia fidget in her chair, trying not to pleasure herself and squirming in anticipation of what he would do to her. She had to be honest, she was quite curious what he would even do to the mare. Though he certainly knew how to push her buttons with his imposing sexist smack-talk, it was even affecting her, though she kept her expression neutral as Celestia did keep throwing her glances every now and then. She wanted nothing more than to be rutted by that stallion, thrown over her desk and be made his mare. But this wasn't about her pleasure, this was for Celestia's pleasure. She herself didn't matter.

She was having trouble sitting still. Of all the things she had expected Sunset to come up with she had not been expecting her to call in the same stallion that had taken her before, the same stallion that had been whispering those sexist things in her ear before, those things that she had to admit were very tempting; things that pushed her buttons in such a way that she could feel the heat in her needy cunt building up just from just the thought of becoming nothing more than a simple cock sleeve. While her teacher had only implied that concept, this stallion was driving it home with brutal efficiency. He hadn't even touched her yet and she couldn't stop squirming. She almost flinched as he pulled something from under his wing. Celestia continued to watch as he pulled the cap of a large black marker.

Holding the marker in his wing Firewire motioned for Celestia to stand up. "Sunbitch. Present yourself for the lovely audience." He simply instructed, and she obeyed without any question, standing up with a reluctant whimper escaping her as she slowly slipped off the toy, leaving the lewd display of a pool of her juices and the thoroughly coated faux cock for everypony to see.

Walking to the front of the class she lowered her front to the ground, finding a relaxed pose that showed off all her assets to the gathered ponies. Most prominently on display was her winking marehood, her puffy labia glistening in the sunlight with her own arousal. She whimpered out of need, without the toy to somewhat mitigate her burning arousal she was slowly going mad with lust once more; his dominance so much different from Sunset's. Closing her eyes, she let out a slow shaky breath. The initial touch of his marker on her right flank made her squeak out lightly, she could feel him writing, she didn't know what he was writing, but from the snickers emanating from the crowd of onlookers it wasn't anything chaste.

With a chuckle the first thing Firewire wrote on the Princess' flank was 'Public Use' with a pair of arrows pointing to her winking pussy and her tailhole. The next phrase was 'twist and pull' with arrows pointing at her teats. "Ooohooo look at this." He cooed lightly, slapping each of her slightly swollen teats, then giving the erect nipples a little tug, hard enough to elect a squeal of pained pleasure from the mare, but gentle enough not to actually harm her. He continued to litter her flanks with different variations of how much of a slut the princess was, ending his little session with something so simple, yet probably the most degrading thing he could have done. He crossed out her cutie marks, to uproarious cheering from the crowd, watching the mare's cheeks turn hot with shame at the representation of her talent and status of alicorn of the sun being crossed out replaced with the crude drawing of a cock spraying cum aimed at her flank. "There we go, a more fitting cutie mark for you, Sunslut."

Biting her hoof Sunset stifled a squeal of pleasure, she could no longer restrain herself. Watching the stallion write profanities on her student, hammering home her place during this session was simply too much for her. She couldn’t take denying herself any longer and now that another was attending to Celestia she could watch. Increasing the vibrations of her toy and resting her body on the desk she firmly thrust the toy into her depths, screaming out in pure and utter bliss, feeling the bumps and edges and ridges that would normally be pulsing veins stimulate her needy craving marehood. It wasn’t long before she started feeling a familiar pressure building up in her pussy.

She picked up her pace allowing it to grow more frantic, pouring all her needs and desires into it. Watching Celestia submit had driven her wild with desire for the mare, she slammed the toy into her wanton sex, not like a mare toying herself but more like a strong powerful stallion having his way with her, dominating her without a care in the world, showing her what a mare’s true place was, at least in her own kinky fantasy. One that she proudly watched her student living, one that she craved herself. She bucked her hips firmly back against the toy, imagining the stallion mounting her, whispering that she was his, using her like nothing more than a two bit whore to prove his point.

Each powerful thrust into her needy aching core coaxed out a shamelessly loud but sweet cry of lust fuelled pleasure, she noticed Celestia watching her enviously. Those large pleading magenta eyes meeting with Sunset’s gentle teal ones, she felt compelled to simply keep going all out, she felt the need to make a show of it and take another lesson from Celestia’s teaching methodology: lead by example. She pulled her hoof away from her muzzle and made Celestia listen to her cries of ecstasy, made her student watch as she grew closer and closer to her climax, her inner thighs coated in arousal. Their eyes locked showing rapt attention to the other. Celestia could take a little more teasing, as Sunset justified it to herself. It wasn't a second later when the first wave of pleasure hit her like a tidal wave, washing away all her thoughts and concerns with mind numbing pleasure.

As her teacher writhed on the desk, convulsing in the pleasure of an intense orgasm Celestia couldn't take it anymore. She needed relief, she needed to climax as much as- no more than Sunset. Her body was screaming for it, her marehood felt painfully empty as she watched her teacher. Without taking her eyes off the heavily panting mare, a part of Celestia's mind remarked how cute Sunset looked with that goofy utterly satisfied look plastered on her face. Looking at her side she smiled at the stallion, she could smell his spicy masculine musk from there. "Master! P-please use me! Please, I need to serve your pleasure! I need to have your cock inside me so I can pleasure you with this whore body of mine!" she purred in the low deeply sexual voice of hers she had now adopted as ‘Sunslut’.

The stallion didn't even reply to her, he simply admired his handiwork for a long moment, before pulling a blindfold from Sunset’s cache of toys. Swiftly he used it to obscure Celestia's vision. Taking away one of her senses to make the others more active. Watching her shiver out of what he likely assumed was some mix of fear made him smile as he circled her. Intentionally making loud clopping noises with his hooves, enticing the helpless mare to begin conjuring up what might be awaiting her, turning her own imagination against her until he slapped her flank, electing yet another moan from the needy wanton mare. Satisfied with her response he continued by taking out an adjustable spreader bar, snapping the shackles around each of her hind legs to keep them spread nice and wide, unable to close themselves off to her betters. He quickly followed the action by shackling Celestia's fore hooves to a secondary pair of leather cuffs, forcing her cheeks to rest in the dirt rather than on the comfort of her hooves. "Maybe we should keep Sunbitch like this and have the entire town just rut her till she's too loose to give pleasure to any stallion." He said ever so casually to Sunset, coaxing a chuckle from the mare.

"Perhaps." She agreed, slowly slipping off the desk. Standing on still trembling hooves she approached Celestia, kneeling down in front of the mare, getting in a comfortable position as she watched the stallion retrieve a flogger from his pack. Cupping Celestia's cheek she leaned in to whisper in a low voice, “Shh... be patient Tia. It'll be worth it my student, I promise you." her tone gentle and comforting. She lightly kissed her on the cheek watching Celestia visibly relax. Softly she stroked a hoof through her mane.

The first strike to her flank coaxed a loud scream. The sensation for a moment was painful, then as the pain subsided it left a pleasurable throbbing sensation in its wake. Celestia was trapped in between screams of pain and pleasure with each strike of the flogger. She felt him alternating each flank, lashing her a total of five times on each. Both of her cheeks were left feeling like they were burning. In between his whipping and Sunset's light and gentle caresses she felt like she was floating in nothingness. The world around her faded away, there wasn't any pain anymore all she felt was the pleasure of being petted, the sweet sting of her whipped flanks, the scent of her teacher and that sweet intoxicating feminine scent of a mare's arousal mixed with her natural spring scent.

"I think she's ready for you, let’s not keep this slut waiting to be used any longer shall we?" Sunset said, still lightly stroking her hoof through Celestia's mane, watching the mare's blissful, and peaceful expression. An expression she had seen countless of times on Twilight's muzzle. She didn't want to move away; she was enjoying the sight of her student in her endorphin high too much. With a gentle smile she watched the stallion mounting the princess, his strong fore hooves resting on her bright red flanks, endowment teasingly rubbing against her eagerly winking marehood. He wasn't gentle with his sudden penetration, thrusting into the alicorn, proceeding with almost savage eagerness. Not that he really needed to be gentle with the Princess in this state; pain was dulled, or according to Twilight's recounting of the experience non-existent.

Firewire let out a soft grunt, feeling the velvety insides of the newly-coronated Princess of Debauchery wrapping and massaging his cock was an experience worth many a repeat. He didn't waste much more time pulling his cock out of her burning hot core until only the tip remained inside. He then thrust forwards slamming himself balls deep inside of her once more, coaxing out the most beautiful sound from the mare, a scream of pure blissful pleasure. He grunted again feeling her hips grinding back against his. "AH...! Sunbitch seems to be accepting her place eagerly!" He announced boisterously.

The pair quickly found a steady rhythm of rutting, a pace that was frantic and needy. His thrusts were bordering on violent yet there was an almost calculated strength put behind them. To any distant onlookers it would look like he was making the pace, that he was ravaging the mare brutally, yet for Sunset it was clear that Celestia was setting the pace, not him. She was ever so subtly leading him on an instinctive level. She could hear the stallion letting out grunts and groans of pleasure in between the cores of lewd wet smacks. His thrusting grew ever more irregular with every passing second, his hooves grabbing around the spaced out princess' hips for support.

Tenderly, Sunset continued to stroke through Celestia's mane, giving the gentle affection that the mare had earned after all the waiting and teasing she had to endure before this moment. She took the moment to make up for the harshness of her denial. With a loving smile she placed a kiss on the Princess' muzzle, a gentle but powerful and dominant kiss. Their tongues playfully wrestling, Celestia putting up a token resistance against her advances, in the end though Sunset dominated the kiss.

In contrast to Sunset's gentle domination in their passionate kiss, Firewire was hammering his large throbbing stallionhood into Celestia's needy pussy making her feel so full with his deliciously large cock. He could already feel himself closing in to his own orgasm, that familiar tightness in his cum-laden balls. He judged that by the tightening of her insides the princess made slut was also getting close to her own release. Without a moment's hesitation and without much gentleness he smacked her on the flank leaving a particularly large hoof print across her sun cutie mark, giving the mare that one last push she needed sending her over the edge in to one of the most intense orgasms she'd ever had.

All the teasing, all the denial having built her up so much that her vision went from the blackness of nothing to a blinding white. Her body was rocked by the sensation of her powerful orgasm. Her juices squirted against his crotch and her own thighs, thoroughly soaking her pristine white coat along with the socks and her crotch-less panties. She squealed into the kiss with Sunset writhing and squirming in her bonds; her teacher pulling away to offer all a chance to hear her melodic moans and lamentations as she enjoyed the stallion still powerfully fucking her, giving Celestia just what she had desired, being turned into a panting mewling mess of a mare.

The sudden tightness of her snatch, the sensation of her needy burning hot core milking his length was enough to push the stallion over the edge. Grunting in lewd pleasure as he rammed his cock inside of her one more time, panting heavily as he pumped rope after rope of creamy seed deep inside of the Princess, painting her insides white with his seed and relishing in the feeling of her tight cunt squeezing his shaft. "Ooooooooh yes! Sunbitch! Oooh, that's a good slut." He purred, feeling his cum being forced deeper into the mare, having no real way to escape her between, his impressive girth and her tight folds. His hoof ever so gently caressed the Princess' slightly swollen belly.

He stayed inside of her for a decent length of time, relishing in the sensation of her marehood milking him for every last drop of cum. After catching his breath he pulled away from her marehood, slowly letting his half erect cock slip out with a lewd pop, releasing a torrent of marecum mixed with his own seed pouring from her well used marehood. Without ceremony the stallion used her tail as a towel to clean off the mixture of his seed and her cum. Without another word he started undoing her bonds. Packing up his things he left with one last slap to the Princess' rump.

Celestia's mind was blank, there was only the warm afterglow of her blissful orgasm as she floated in nothingness. A deep feeling of satisfaction was nestled inside of her, filling her with a true warmth. She still felt her heat but it was distant and far away in the moment of this almost dream-like state where she hardly felt it encroaching on her mind. She focused on the presence besides her, the scent of spring flowers overwhelming her, comforting her, slowly guiding her back to reality. She didn't want to go back though, she was happy like this... this was perfection and she wanted to stay here forever. Yet she knew that was never going to happen; deep inside she knew this had to eventually come to an end. She let it happen, slowly savoring the moment and the deep seated emotional sense of satisfaction.

Sunset slowly lowered Celestia to lay on her side, very gently cradling her close. Resting the mare's head to her chest and letting it lay there, slowly winding down from her endorphin high. For a long while she simply sat there in silence with the alicorn snuggled against her side. There was nothing that need be said, all she needed to do was be there right now, giving Celestia a comforting presence to wake up to. She was absentmindedly toying with her marehood using the same magical vibrator she had used on herself before, powered off and simply letting the mare slowly come down while staving off that burning need of her heat. She greeted Celestia with a smile as she started to stir, slowly opening her eyes to meet those gentle, caring teal eyes of hers. "Welcome back, Tia." She offered in a low voice.

"M-miss Shimmer?" She asked, her voice low. She felt exhausted, more than she ever had everything still felt somewhat numbed. Everything but the softness of Sunset's coat against hers.

"Just Sunset now Tia, the session is over." She gently informed her, allowing the fake glasses to fall from her muzzle with a light shake of her head. She magically pulled over a prepared blanket, covering the mare even though it was the midst of summer and still quite hot out. "So tell me Tia, how was it? I know it’s not your first ever session but... well it was probably different."

She had to consider that for a moment, curling up under the blanket and against Sunset with a gentle smile forming on her muzzle. "It was quite different than what I am used to. It wasn't as rough, and it didn't push my boundaries too much. Though I do have to admit it was... bending some limits. I have never been so thoroughly humiliated. At least not publicly, and certainly not in this fashion." She said, her voice kept low and soft so only Sunset could really hear her words. She couldn't help but lean in closer, letting herself appear as vulnerable as she felt with the mare, utterly exhausted and drained both mentally and physically.

With continued gentle care Sunset lit up her horn starting to slowly clean Celestia off and by extension the uniform that she was still wearing. Slowly she also undid her former mentor's tail and mane, letting them flow free once more. "I see, you had a good time though I hope? Was... this your first time experiencing that kind of high?" She asked gently taking off Celestia's uniform only leaving her wearing the collar that she had snapped on her at the start. Neatly folding the clothes in front of Celestia, lastly she took away the mare's horn ring, watching her shiver as the connection to her magic was restored.

The exhausted mare once more needed to think on the question. It was hard to gather her thoughts, especially so soon after the... she didn't even know what to call it. She knew she'd experienced something like it before with Night Glider. It was almost an out of body experience or maybe it was more akin to being doped up on morphine, not that she had much actual experience with that, save for maybe recovering from a few old battle wounds in the long distant past. Finally, she whispered softly. "No... it wasn't the first time, but... it was different from before. More a gentle warmth filling myself, satisfaction with being shown my place." She nodded gently, saying that felt right somehow. She wasn't entirely sure why but it felt like the right thing.

Sunset nodded gently, slowly levitating over a pitcher of water with a cup that had been standing off to the side. She added in two pills, letting them dissolve before presenting it to Celestia. "Here, this should help with the feeling tired part. Don't drink it all in one gulp, just sip it for a while." She instructed with a gentle, slightly concerned sternness to her voice. She watched with an encouraging smile as Celestia did just that, taking small sips from the refreshing water. She quickly cast a privacy spell around the two of them, obscuring some of the details from other ponies making it look to them like they were whispering while she simply helped Celestia through coming down from her endorphin high. She chose that moment to stop using the toy on Celestia; knowing the upcoming bit was a bit more serious.

"So... how do you feel then Celestia?" She asked giving the mare in question the look of 'and I mean honestly'.

For a moment she wanted to answer fine, then realizing what Sunset had cast she let out a deep sigh, taking another sip she finally answered. "Terrible. I can still feel the fire burning inside me, I... it is honestly extraordinarily frustrating Sunset... even this ridiculous degree of pleasure didn't take care of it. In addition, I... this is a onetime thing, I cannot do this; I should not be doing this I am supposed to be... many ponies see me as a bastion of purity, somepony to look up to. I am always expected to be the perfect mare. I just... just... want to scream."

"What's stopping you?"

"What...? But..." Celestia wanted to start objecting suddenly finding a hoof over her muzzle.

"Shh, don't even start. Just do it. Let it out Tia." Sunset whispered in her gentle soothing voice. And the princess, with one last deep breath simply did, let it out. She buried her muzzle in Sunset's chest fluff, screaming out her frustration letting out the raw repressed emotions now that she was given the opportunity for it. She felt somewhat awkward but she pushed that aside, as a habit she had already rendered herself vulnerable to Sunset, this last step was just another part of this subculture. Or at least that is what she told herself to justify letting out all her raw, buried emotions.

It was a solid minute later, as she slumped against Sunset, that she noticed the tears staining her cheeks. She wasn't sure when she had started crying, but the sense of relief that flooded her was enough to look past that, into the other mare's teal eyes. "Thank you..." She whispered, smiling in response to Sunset wiping away the tear stains. She finished the drink, looking around for a long moment, the heat already building in her marehood once more. "I guess... it’s time for us to part?"

Sunset nodded lightly, allowing the privacy spell to drop away. She stood up slowly, helping Celestia up as she did. Even though she didn't need the water, or rather potion in it, it had done its work of revitalizing Celestia physically while the little talk visibly had done wonders for her mentally. "Yes, go on. And, if you ever want another lesson..." She smirked for a moment slipping a piece of paper to Celestia, then with a kiss on the cheek she lightly pushed her towards the crowd.

Celestia returned the kiss, before walking off away from Sunset, feeling better about herself and more comfortable with situation. She looked down at the note, her cheeks reddening in response to its contents. Me, You and Sparkles. Next Saturday. It was simple and to the point, but quite efficiently got the message across for Celestia. It wasn't so much an invitation as it was an order from her teacher. She couldn't help but grin happily, shooting Sunset her most sultry smile over her shoulder, simply mouthing one phrase "You're on Sunset.”

Author's Note

from the author: Wendy Crescent!

I hope you all enjoyed the story as much as I enjoyed writing it. And most of all I really hope you liked the approach I took with Sunset and Celestia's D/s dynamic. I see so many stories focused on the more extreme ends of the scale. I hope that I did justice to the perspective of the submissive, most of it came from my own personal experience as one. I still hope that the story was hot, and kinky for you all even though it didn’t focus overtly on sex or the more extreme kinks.

I would also like to extend my thank the following people.
Master Whitechainsaw for being a big encouragement to pursue writing, his proof reading and especially for allowing me to use his character Firewire in the story.
Shutter_Speed777 for proof reading the story.
ScopeEva for proofreading and in part editing.
Thedarkitty for proofreading and editing.
Lunargaurd4ever for proofreading and editing.

I would of course also like to thank The Abyss for allowing me to participate in his collaboration!

With that I will sign off,
Happy Hunting everypony!