I’m a non-native English speaker. Still the text should be readable. Also this is my first greentext and I’m really unused to the format style as a whole. I apologize in advance.
This short story contains spanking and some momdom/femdom play. Also I put () for internal monologue as pastebin doesn’t allow italic text kek….
 
Prologue
You are prince anon, Celestia’s adopted son. And you’ve just been caught stealing from Canterlot kitchen.
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>"C'mon Celestia lets reasonable abo—"
>"Hush now, no backtalk’s Sweetie. I gave you plenty of warnings not to to steal from the castle kitchen. This time you even tipped over a large cake running away."
>"B-but Celestia I'm the prince of—"
>"That's mommy to you Sweetums! Now undress, don’t make this any harder than it needs to be.”
>With a defeated sigh you slowly begin to undress. Recognizing Celestia’s stern tone you know you’re in for it now. No amount of arguing is getting you out of this one. This much you knew for certain.
>Your multiple excursions to the kitchen stash was bound to leave you in trouble someday. With that said you take your sweet time undressing, dragging the inevitable out as much as possible. Leaving only your boxers on.
>(Well this sucks…. Guess nabbing cookies and muffins wasn’t the best of ideas. Still… worth it! Besides her spankings are super weak anyways.)
>”Alright dear, bend over and grab your ankles for mommy. Don’t be shy.”
>”But mom! I’m a teenager now! I’m far too old for this crap! Surely we can just—”
>”That right my prince, you’re a big boy now. So from now on I’m going to have to discipline you accordingly wont I?”
>(Discipline me accordingly? Saaay whaaat? Perhaps I shouldn’t have said that… meh whatever….)
>As you finish your last thought you notice your underwear being pulled down.
>”M-mom s-stop that! It’s embarrassing.” You say as you quickly bring your hands up.
>”Oh no you don’t! Bad boy!" Slapping your butt hard. "Keep those hands on your ankles!”
>Whimpering you reluctantly comply.
>Sure Celestia has seen you naked countless times before. But being bent over like this was a bit much even for you.
>”I-I really don’t like this position! C-can’t we do it on the bed instead, like before?”
>Smiling Celestia spoke softly. “I know this is tough Sweetie, but I won’t accept any fuss today. I'm very upset with you right now. After all you should know better than to steal by now.”
>Humiliated you remain in place, displaying everything for your mother to see.
 
>Content that her son hadn’t moved, Celestia took a moment to admire the cute round butt in front of her. However not one for waiting, she raised her right hoof high in the air.
>And in a blurred motion she unceremoniously brought it down. Delivering several spanks in rapid succession. One after another on her son’s unprotected bottom.
>Slap, slap, slap!
>"Gh-aa, no wait just a s-second here— ah-ah."
>Anon was obviously not enjoying the harsh sensation. Small grunts escaped him whenever her hoof landed.
>Slap, spank, slap!
>"Y-you're going t-too fast! Ouufh— slow down p-please!"
>With some amusement Celesta watched as the skin rippled and shifted. Of course she would never admit to such a thing openly.
 
>”Gah, haa-ah! M-mom! Please, n-no, ugh… more!”
>Slap, slap, spank!
>”Hush now Sweetie, mommy knows what you need. Now hold still, this only the warm-up.”
>As Celestia finished her last sentence she began raining down even harder slaps; delivering them just as fast the previous ones. Mechanically spanking your ass firmly without any respite.
Smack, smack, smack!
>”Ah-ow m-mom, I’m sorry! I won’t- ah-ha,” wincing you struggle to form the right words, “I-I won’t steal again okay! So you c-can sto— ugfh… so you can stop now o-okay?”
>Seemingly discarding your pleas entirely, Celestia simply continued administrating spank after spank. Deftly alternating her hoof over your butt cheeks.
Smack, smack, smack!
>It quickly became more and more difficult to remain in place. By now it took all you had just to hold onto your ankles properly.
 
>His adorable hinny bounced playfully whenever she struck it. Containing a giggle she swiped her hoof in upward motion. Making his bottom wiggle about chaotically.
>As long as she didn’t use any added magic, Celestia knew from experience, that no true harm would come to him.
>Smiling she watched as a noticeable hue began sprawling across his upturned bottom. After all, anon's furless body made it easy to appreciate any hoofwork in action.
>Noticing his legs wobbling ever so slightly, Celestia also knew that he wouldn’t be able to remain in position for much longer. Thus raising her hoof for the final blow; she landed it squarely in the center. Eliciting a high pitched yelp from anon in return.
 
>Feeling the spanking come to an end you immediately stand upright, instinctively you rub your sore ass. “Ow, ow, ow… mom! H-how could you? That was way… way h-harder than last time!” You shout angrily at her.
>You immediately realize your mistake when you look back at Celestia.
>”Sigh… it seems someone isn’t really regretting their naughty actions at all.”
>Before you can complain further, you feel yourself being dragged towards the bed.
>To your absolute horror you’re placed over Celestia’s legs.
>”No, no, no! I don’t want a-anymore! This isn’t f-fair! I only took some deserts! I’m a prince, you can’t do this!”
>”It's not about what you took, so much as it's the act itself that matters. I’m sorry honeybun, but until you've learnt your lesson, I’m not stopping. And it looks like spanking you with my hoof alone isn’t good enough anymore."
>That last line didn’t go unnoticed by you. Looking up a bit you see Celestia pulling a hairbrush over from the bathroom. As it nears both of you she grabs hold of it, steadying it just above your already sore butt.
>”Now this is going to sting a little more… than what you're used to Sweetie, so don’t be afraid to cry. Just remember mommy loves you.”
>Fearing the worst to come, you stammer out pleadingly, “P-please… no. I'll do a-anything… I-I'll clean my room, I'll even—”
>”Sshhh, it will be alright dear. Be a brave boy for mommy okay? I need you to relax your little hind as much as possible. Otherwise this going to hurt a lot more than necessary.”
>Whilst talking Celestia patted your butt teasingly with the instrument. Prepping you mentally for what’s to come.
   
>Your head is going a million miles an hour. You can’t believe this is happening to you.
>(It’s all because of that stupid chef. If he hadn’t seen me. I’ll make him pay after for sure….)
>As far as you knew not many got spanked in Equestria let alone paddled. It was frowned upon by most. So why did Celestia insist on doing it to you all of a sudden?
>But before you could ask, you were stunned shut.
>Whack!
>”Njahaa, m-mom! Don’t!“ Squealing even with just the one hit, the smarting from it was on a completely different level.
>Whack!
>”Gahh! I-I’ll be behave so—“
>Wham, whack, whack!
>”Aha-ah, p-please, Oww! I can’t… aii!”
>Celestia’s quick flurries now mercilessly pelted your behind. Quickening her pace she gave you no time to recover between blows.
>”Keep still anon,” tutted Celestia, “just a little longer now.” By now Celestia's encouraging words did little to help.
>Whack, whump, whack!
>Each unremorseful hit made you violently squirm in place. Forcing you forward somewhat.
>Whump, whack, wham!
>Unable to take anymore stinging pain, you bring your hands up. But to your dismay you find that Celestia is securely pining them down with her magic. Making it impossible for you to shield yourself.
>Frantically you try to avert oncoming blows, twisting and turning to no avail. Nothing alleviated the smarting.
>"Is someone trying to get away hmm?"
>Whump, whack, whack!
>”Ufh, mo-my s-stop! A-ngh— don't… ple-se!“ Hopelessly trapped you can only brace yourself for further impacts. Struggling you fought valiantly not to cry. However feeling utterly helpless in your current predicament, you're just barely able to stem back tears.
 
>Looking down Celestia eyed her son closely. He was obviously straining from the arduous spanking. And by now his pink bottom was in stark contrast to her own white fur.
>This spanking would serve as a poignant reminder not to steal. Sitting down later, for the next following day or so, he would be reminded of that.
>Celestia knew it was unbecoming of her, but a part of her enjoyed the cruel spectacle in front of her. The sound of the brush as it meet his unprotected rear left her wanting much more. Just like his adorable little wailings did.
>Of course anon was unaware of how much she was enjoying herself right now. She found herself unable to hide a smirk seeing him kick and scream as her brush made direct contact with his tender bum.
>From the very beginning her son's moaning and panting had continuously sent small shivers down her withers. Making her tingle and wink discreetly unbeknownst to him. And before she knew it, she secretly wished for him to commit more mischief; sooner rather than later.
>Lost in thoughts for a moment, Celestia was suddenly brought back to reality when she heard anon sniveling and crying underneath. The thrashing must have finally overwhelmed him.
 
>Your ass is on fire and you’re bawling your eyes out. Nothing you’ve said during the spanking had done anything to lessen Celestia's spanking at all. Panicking you're no longer able to to think straight. Unable to find away out of this blistering nightmare.
>Whack, whack, whump!
>"Don't be afraid Sunshine, let it all out, I'm here." She says, putting extra force into the next set.
>Whump, whack, wham!
>”P-leas… no mor… I, gha-ah— I am s-so sorry. I won’t be bad— whaa, ever a-again! Uhfaa, pl-se f-forgive me! Mom-yy!”
>Broken, humiliated and stammering you desperately cry out. Tears falling freely as you beg her to end the ruthless onslaught.
"There we go child, there's no shame in crying. Mommy knows you're a strong boy."
>Wham, whack, wham!
>Head spinning you feel yourself going limp, your own body betraying you. All of your strength simultaneously abandoning you.
>Whump, whack, whack!
>The sheer intensity of her spanking made your entire backside throb in unison. Not a single spot spared.
>Wham, whack, whack!
>And just as you thought you couldn't take another painful hit; Celestia abruptly stops.
>Trembling you find yourself slowly being pulled upwards. Carefully you’re placed on the bed by a yellow aura.
>Immediately after you’re engulfed in white fur as Celestia embraces you tightly. Her majestic wings folds over you, enveloping you completely.
>Sweating from the simmering pain you defeatedly sob into her fur.
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Epilogue
>After a seemingly eternity of crying, you finally calm down. Opening your red strained eyes you see that Celestia is still by your side.
>Humming softly she strokes your head.
>“I’m s-sorry for what I did mommy, I… I didn’t think you’d be so… so angry at me for it….”
>”It’s okay honey, we all make mistakes every now and then,” Celestia says as she nuzzles you, “that’s why I’m here Sweetheart; to remind you if you do.”
>Utterly drained from the ordeal you find yourself slowly drifting off to sleep.