Derpinomicon Chapter 2 (AB/DL, Messing, MR)

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Warning, this a nightmare fuel fic that contains diapers, messing, wetting and mental regression (temporary).

5/23 quick corrections made
5/27 New sections added. Still need to proof-read this again in the future.
6/6 Some corrections made.
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Chapter 2

“The Great and Powerful Trixie, has reduced the conceited and foolish twi-fart sphincter to a diaper filling foal!” Trixie bragged to herself. She was delighted to see her foe’s mind reduced to one of a cooing, drooling, and babbling toddler. Thanks to the Derpinomicon, she was able to finally to conquer the very pony that made her magic show a source of mockery and ridicule. “And now for my next trick, Dimbright Stinker,” Trixie said with delight in her voice.

She began levitating Twilight, who was giggling due to her foalish accident, into a magically enlarged foal bouncer, and secured her in tightly. “Hope you like being trapped in that jumper and messy diaper Twilight,” she said to the bewildered mare, “because you are staying in those for a long, long time. I sure hope you are ready for a good bouncing in that filthy diaper of yours.” She paused for a moment to admire her handy work. “And now, play time begins!” Trixie exclaimed with a shit-eating grin as she started rapidly bouncing Twilight in her prison with her telekinetic magic.

The mess inside Twilight’s diaper starts to mush all over her rear. “Ohhhhh, twitwi’s diapee-wipee feels weally good,” Twilight said while drooling with her tongue hanging out. Twilight’s facial expressions was that of pure bliss. “All icky and mushy now, me likey-”
Suddenly, Twilight’s face went white, and is replaced with confusion. Seeing this, Trixie held her bouncer still with her telekinesis grip and looked at her with curiosity.

After a full minute after sitting quietly she begins to speak up with concern, and disgust in her voice. “T-Trixie? This is so… gross… why... Why are you doing this to me? I-I never had anything against you.”

Trixie stared daggers in Twilight’s eyes and levitated the Derpinomicon in front of her, replying with abhorrence in her voice, “Aw, is baby Twilight having a wittle rewapse? I would like to have you know that the Derpinomicon’s mind regression magic isn’t perfect, even with a great and infallible unicorn like Trixie using it. Sometimes it even gives back the cursed pony some mental facility for a brief amount of time. Usually during a moment that would cause the affected pony great shame. You know, like this very moment my dear, pathetic and powerless Twilight!”

Trixie, satisfied with her diatribe, dropped the Derpinomicon on the floor and continued, “You brought this on yourself Twilight, I just wanted to entertain stupid plebeians with my magic. But, you had to come along and turn innocent Trixie into a laughing stock.” Twilight began to rapidly to lose her intelligence once more, and was reduced again to tears by this. She responded, “Twi is sorry. Didn’t mean to hurt  Twixie, wants to be friends with Twixie.”

Trixie was left shaking with anger, and was utterly unsatisfied with Twilight. This resulted in her trudging back and forth, in the process taking her eyes off of Twilight. Once again she began another tiride “It’s much more than just that Sparkles, you always had it easy in life. Unlike me, your life was given to you on a silver platter. You parents showered you with love and affection, you were always the teacher’s pet in magic school, you had Princess Cadence always looking out for you, and you always were Celestia’s pet!” Trixie yelled with frustration in her voice. “What gets me, Twilight, is that you don’t deserve any of it. I know how you just recently abused your magic and cast a ‘want it need it’ spell on that silly doll of yours and cursed half of Ponyville and didn’t even get punished for it!” shouted Trixie, her face burning with anger. “It was only a matter of time when you got your comeuppance. I wonder if anypony will notice the difference at all with how childish you have always been.”

Twilight at first teared up at Trixie’s words. Trixie was correct in stating that it was irresponsible of her to let her anxieties get the best of her during the Smarty Pants incident. Rather than dwell on the mistakes she made in her past, Twilight saw Trixie’s inattention as an advantage and immediately took action. Even with her reduced intelligence, Twilight was successful in levitating the book to her and reading it to learn just some of its many secrets.

“How come a silly and ugly mare like you gets to be Celestia’s protege Twitard? Trixie is perfect in every way! And Trixie is really going enjoy seeing Twilight reduced to a moron that slobbers all over herself, and sits in her own horse apples for hours on end like a weak and helpless foal… It must really stink to go from positively having everything a mare could possible want in her life to being dependent on Trixie for every-” Suddenly a green burst of magic blasts right from Twilight’s horn directly into Trixie abdomen, Twilight then starts bouncing, and flails her legs with joy.

A *PLOORP* sound echoed through the wagon, and Trixie chuckles as a rancid smell filled the air, “Ha! You poop more than an Ursa major Twitard.”

Twilight snickers “Heehee the stinky and messy Trixie needs a changie”

Trixie looks at the babbling Twilight in confusion, “Trixie thinks Twilight is confused. Trixie would never mess herself like a foal, such as you.” Still inquisitive of Twilight’s statement, Trixie looks back at her hind quarters only to find that she is now wearing a very messy mare sized foal diaper herself the words “The Great and Obnoxious Stinker” printed on the diaper’s front tape. In shock Trixie exclaimed, “Trixie’s magnificent magic just got bested by a cooing, drooling and diaper filly dimwit!?"

Seeing this Twilight gives a toothy grin, drool flowing from her mouth, “Heehee Twi sees Trixie loves her soft squishy diapee! Twixie make great and poopful doodoo! Twitwi wanna make stinkies like dat!”

Mortified Trixie’s coat goes completely white. She literally stands still for a full minute and then in an attempt to save face adds, “O-oh yeah..? W-well at least I outperform you… in one way... The day is still mine, Twilight.” Trixie awkwardly answered. Puzzling for a moment of what exactly happened Trixie was able to deduce that even with her reduced mental state Twilight was able to read the Derpinomican while she was ranting and harnist it’s magic to render her diapered and incontinent. This resulted in her unable to control her bladder or bowels anymore and/or notice even if she went.

Figuring she was done with the bouncer for now, she unfastens Twilight from the bouncer and lifts Twilight with her Telekinesis “Twi goes uppies!” Twilight says as Trixie lifts her out of her bouncer and levitates her safely to the ground. She scowls, as she notices the state of Twilight’s diaper. The diaper is sagging half way down her back-legs the back side of her diaper is having a hazel color and bumpy texture. Despite her current condition, Trixie continued berating Twilight. “Letting you cast that spell may have cost may have cost me my continence, but Trixie still will win in the end! Who cares how good you are with magic, if you’re too dumb to use it?” Trixie responded with vindictive in her voice.

After figuring out why she was diapered, Trixie proceeded to get changed. Trixie lies on her back, and uses her magic to levitate a spare adult diaper, foal powder and some foal wipes. In the process of lying on her back, she squishes the mess further into her coat, causing Twilight to laugh with glee. After dealing with the mess, and an excited Twilight, Trixie manages to wipe her messy rear clean, she actually enjoyed the relaxing feel of the damp wipes on her backside as she finished wiping herself clean. She then slid a new diaper underneath her butt, and began to liberal sprinkle foal powder all over her diapered area. Next she tightly fastened the diaper securely around her ass. Finally, she lifted her very used diaper with her magic and brought it outside to the awaiting garbage can sitting nearby her wagon.

Upon re-entering her wagon, Trixie sniffed the air, notices the penetrating and foul odor in the wagon decreased, but still lingered. With her own mess cleaned up the only remaining source was Twilight. Using her magic the levitated the fidgety, drooling mare to her supplies. She then began the task of changing Twilight’s much larger soiled and sticky (thanks to the jumper) diaper. Twilight began to kick her legs up and down, trying to stay in her warm and mushy diaper. “Nooo, me wikie stinkie!”

Trixie begrudgingly levitated Twilight to her change mat and began changing her “Ha Twilight, you really bombed this diaper. But it’s still no match for the greatness that is Trixie!” Trixie exclaimed as she began wiping Twilight, who responded with a cheerful titter. She then discarded the dirty diaper in the trash, and placed a clean diaper underneath Twilight backside and start to apply foal powder on Twilight’s behind who responded with a gleeful coo.

“That’s right, Twilight should be thankful that Trixie is so generous and flawless.” Trixie says as she levitates Twilight to her feet. In return for her generosity, Twilight rewards Trixie with a warm hug.

“Trixie good momma!” Twilight declared, turning Trixie’s face bright red.

“Just try not to stink this one up too quickly.” Trixie responds, not knowing quite how to react to Twilight’s tomfoolery.

Looking down at herself and Twilight, Trixie knew that as long as she was under the effects of the Derpinomicon she needed to get more supplies. Embarrassed by her foalish attire, Trixie placed her magician’s cloak over the diaper. “At least the Great and Intelligent Trixie has the common decency to cover herself, unlike a certain smelly foal.”

The magic of the Derpinomican immediately took effect; her diaper grows so large that her cloak became useless for hiding her diaper, complete unbeknownst to her. Looking down at the now over inflated diaper, Trixie takes off her cloak before the diaper became too large. Twilight noticing Trixie’s giant diaper begins to giggle in excitement, “Ooh, ooh, Twi want big diapie wike Twixie!”

Agitated Trixie inspects the diaper, she notices that over the tape the phrase, “The Great and Obnoxious Stinker” was written, a testament to her current state. Trixie sighed, knowing full well that any diaper she wore would be enhanced much like her current one. Worrying about what to do Trixie started to feel relaxed, and a warm feeling filled her diaper. Looking down she realized she had slightly wet herself. “Whaaat! The Significant and Alluring Trixie just wet herself?”

She looked back at Twilight, preparing another jeer. “Go ahead and laugh all you want Twilight Sprinklepants, I will be the one with the last laugh!” Trixie shouted out loud with ridicule in her tone. She turned to Twilight expecting laugher, but all she was an adult mare with a vacant stare, who was now leaving a puddle of drool on the wagon’s floor.

Her insecurities settled, Trixie decided she needed to go out, regardless of her childish garb. Trixie fastens her saddle bag around her back and secures Twilight in a Mare sized foal harness. Now fully prepared for her trip, Trixie leaves her wagon, “Bye bye Trixie! Twi now wait for you.” Twilight says in farewell to the pony that kidnapped her.

While exiting the wagon, her big diapered butt became wedged in the doorway, she began to struggle in an attempt to get free, crinkling the entire time.  Seeing this, Twilight started to bounce on her diapered rear. “Twi wanna pway, wooks fun!” After a few seconds Trixie managed to free herself. Using her magic she brought her hat over, placed it on, and walked off towards the pharmacy for more diapers.

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Thankfully for Trixie it was starting to get late; most ponies would be at home at this hour preparing dinner. She still had to be on guard, one slip up and she would once again become the laughing-stock of Ponyville and would put her revenge scheme in jeopardy. Sneaking around to her destination like a bandit, she reached the Ponyville pharmacy.

The pharmacy was mostly lifeless, glancing inside, Trixie noticed a brown earth pony supervising the store. She recalled this pony from the days she used to perform her magic shows at Ponyville. The Colt used to work at the Ponyville gift shop, and was known to be a bit of a recluse and an outsider. All she had to do was buy her supplies, return to her wagon, and no pony will be any the wiser.

Regrettably, entering the Pharmacy was met with great failure. As Trixie, yet again, found out the hard way that her puffy diaper made passing through the doors a difficult task. “The great and powerful Trixie does not trust doors!” Trixie said, as she flailed her front hooves frantically.

As hard as she tried, she could not remove her padded rump from the store’s door. Seeing this the nerdy sales clerk’s eyes instantly went wide as he became aware of Trixie’s situation. “Ah, Madam, it seems like your giant diaper is stuck in the door, don’t worry, I know just the solution to your problems!” the awkward clerk says with glee completely unperturbed by the situation.

“This day as he walked towards Trixie. The clerk then grabbed a nearby broom, and started to prod at Trixie’s diaper.

“Trixie does not approve of being treated like a pinata! Stop that this instant!” Trixie demanded with exasperation in her voice.

“Would you prefer I go get help than my lady?” the clerk responds.

“Um, Trixie takes it back, just get me out of this door!“ The clerk happily nods his head, and pushes a step stool next to Trixie.

The clerk then bites down hard on the broom, and climbs up the step stool, “Bbwace urself naw dis’ll be ogre inna jiffy” he says with difficulty as he starts to lay the smack down on Trixie’s diapered posterior. *WHACK* *WHACK*

“Aaaaaaarrrgh, Trixie will not be defeated by a broom!” Trixie cried out. Ignoring Trixie, the clerk raised his broom far up in the air, and slammed it into her enormous diapered rear with all his strength. The impact produced a heavy *whump* sound, and Trixie plummets right into the store’s carpet. Unfortunately for Trixie, the sheer impact of her crash, puts her bladder into a frenzy. This caused a loud muffled hiss sound to come directly from her diaper. Her already balloon like diaper started to swell up, and expand even further. The front of her once white diaper turned to an embarrassing bright yellow.

“Well… At least it wasn’t number two,” the clerk deadpans, again, completely unfazed by Trixie’s antics.

Refusing to let the embarrassing moment get to her, Trixie trotted off to pick up her foalish supplies. The first item she needed to buy were diapers. Browsing the adult diaper alley for a good pack of diapers, Trixie affixed her gaze on an odd brand of adult diapers she never seen before; a diaper brand that featured this cross-eyed Pegasus with a blonde maned, gray coat who had a aloof smile on it’s package. Intrigued with her findings, Trixie picked up a pack, and moved on to her next items.

Stumbling around the store a bit, Trixie also purchased some spare foal powder, foal wipes, air freshener, a pacifier, an adult sized foal bottle, and a foul night-light for Twilight.  As Trixie began to go through the aisles, she was heavily hampered by her giant diaper. Her large diaper, and waddling movement caused her to knock over various items on the shelves, leaving a mess for the workers to clean up. As Trixie went to pick up the last of the items, she ran into a mare and her filly looking for some items. The filly seeing Trixie’s condition began to laugh at the diapered mare. Trixie began to retaliate, “You dare laugh at the magnificent and infallible Trixie. Trixie will have you kn-” Trixie was cut short by a growing pain in her abdomen. Not wanting to waste any more time, and anxious to resume her plan, she scampered over to the store’s counter.

“Did you find all your Adult Foals supplies ma’am?” the nerdy sales clerk asks.

“Yes… Please just make this quick, Trixie has important business to attend to.” Trixie begs

“No problem madam, let’s see what you got her a pack of diapers for “special” Mares, an adult sized foal bottle for fun times and some other things! Is that it my lady?”

“Yes...” Trixie painfully responds almost tearing up.

“That will be 30 bits. You know, I haven’t got your name yet? I would have you know I for one am TOTALLY into this adult foal thing. We should totally hook up sometime, we can have LOADS of fun together!” the sales clerk says with a wink. Instead of answering, Trixie just throws the 30 bits she owes directly at the dorky clerk and completes checking out.

Securing her purchases in her saddlebag, Trixie attempted to brave the door. For the third time that evening, Trixie’s diaper became lodged in the door’s frame. “Again? Don’t you learn miss? Don’t you worry, I’m a lot stronger than I look,” the nerdy sales clerk then jumped into action, and rushed directly into her wet diaper with a shit-eating grin on his face. Trixie found herself in yet another familiar situation, as she was catapulted out the door, and left flat on her face.

“If you ever change your mind, you know where to find me my lady!”

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“H-h-heeey! you'sa *hick*, yus you's, da diaper wearing Mare that wet herself like'sa foal. I bet you really know how to have a good time. Whatcha say you be my drinking buddy for the night? *hick* It will be a blast!” The town drunk slurred to Trixie she passed by.

“Look pleb, as much as the great and padded Trixie would like a drink now, she does not have time to deal with the town's drunk.” the magic mare said with self-assurance.

”Don’t *hick* bee shilly, I'ma as'h shober as ya gonna get *hick*. y-yoous gotz dat diaper thingie ons, sho youse can’sbe *hick* drinkin’ like’sa chhamp. Comes oon an *hick* j-join Berry for some goodz t-times. *hick* The first’st roundz alls on meee.” Berry Punch said as she stumbled onto Trixie and put her front hooves on her soaked diaper for support, giving the blue mare a warm sensation.

“Look, I appreciate the offer, but I got… a, -um…. Foal to take care of back home.” Trixie said repulsed with the intoxicated Mare; she could smell the alcohol on her breath.

“Ha-ha *nicka, look'sa likes thes foal gonna be da one taking care of you'se.” Berry Punch said out loud as she sloshes her saliva all over Trixie's face.

“What? Great and powerful Trixie is perfectly able to take care of herself.” Trixie said with disgust as she backed away from Berry Punch

“Oh'sa yea, *hick* weeell why dids'ya poops yeer'self like one? Seem’sa like the only thing great and powerful about you, is your great and powerful messes.” Berry Punch says while clumsily fanning her front hoof by her face.

Instantly, Trixie eyes go wide and her mouth drops. Shifting herself to look at the state of her diaper, she instantly notices a huge lump bulging out of the diaper and causing it to sag far down to the ground.

“Sheeesh lay-dee, did'joo hide'a skunk in dat big'ol die-pers of urs? Cuz, it'a sure does smellz like ett. PEE-YEW!” Berry Punch says, right before she starts laughing hysterically at her own joke.

Trixie, absolutely mortified by her situation, pulls out a smoke bomb from her saddlebag and instantly throws it in front of her. The smoke bomb instantly produces green smoke and Trixie instantly runs for the hills, unfortunately, the smoke's gas is short lived and her cover was blown, worse yet, she took a nasty spill while trying to waddle away in her infantile garbs and tumbled directly on her rear spreading muck all over every crevice of her behind, unfazed by her blunder, she picks herself up and continue to waddle far away from the intoxicated Mare.

“Dangit's, there'sh goe'sa nother drinkin' buddy, *hick* I-I all-ways though' her act stunk'd *hick*, but that was'sa jus' redic-u-lustshe.... yea know look'sa *hick* like she used that diaper so much, that green smoke is coming froms *hick* itz. Kinda reminds me of that one night I gots so drunks my frien' putz mes in'a *hick* die-per ands Iz *hick* totally poop'd eet.” Berry Punch says to herself as Trixie quickly gaits herself back to her wagon shamefully in her very used and mushy diaper.

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Entering the wagon, Trixie finds herself yet again outwitted by her arch nemesis. As she uncomfortably stands there with her messy behind once again caught in the door, she is greeted by yet another rival.

“Trixie diapee filled with stinky mushy doodoo! Me go poo poo too!” says Twilight still content and in her harness.

“No, Twilight, no please!” Trixie begged not ready to deal with Twilight filling yet another diaper to its brim with horse apples.

“Twillie’s tumtum all grumbly now. I go potty!” exclaims Twilight.

Twilight, then shuts her eyes and she starts to grunt as she pushes yet another massive load into her diaper *PHHHLOOOOORP*.

“Ugh, defeating an Ursa Major was nothing compared to this. Really Twilight? Messy again!?"

“Me go poopoo! Where da stinkies go?” Twilight inquires as she starts to hop in her harness smearing the mess all around the insides of her diaper.

“It went in your diaper, you dumb foal.” Trixie responds with a heavy sigh.

“Diapee is magic!” Twilight shouts with joy as she starts drooling all over her coat in elation and hangs her tongue out almost like she was a diamond dog puppy.

“Magic, of course!” the arrogant unicorn shouts in epiphany. Trixie’s horn starts to glow as she uses her telekinesis to give a buttocks a mighty push, regrettably for her, she forgot about her embarrassing little accident, and although she is successful in pushing out of the door, her actions resulted in a large amount of brown pulp spreading all over her sensitive little butt cheeks. To her surprise, she finds the feeling pleasurable and finds herself smirking over the experience, Twilight, watching her like a hawk is overjoyed by this and starts happily thrashing her front hooves.

“Twixie all squishy like Twilee, we squishy di-dees sisters now!” Twilight squeals like an ecstatic foal.

“Ugh, I am not your sister, like the great and powerful Trixie would even be remotely related to you.” Trixie lavishly says as she levitates foal wipes, powder and a spare diaper out of her saddlebag.

Trixie plops her heavily used and ginormous diaper on the ground, producing a loud *SQUISH* sound. Focused on her task at hand, Trixie begins the ardous process of changing her colossal and very ripe diaper. Luckily, she had magic on her side and the process isn’t too bad. She un-tapes the diaper and gets right down to business; she thoroughly wipes her behind with some cold and moist foal wipes. The coldness of the wipes sends a pleasant shiver down Trixie’s spine and she finds herself grinning like an idiot once again. Like an expert, she discards the dirty diaper in the garbage and slides a new diaper on her behind, which like the last magically gets altered to Trixie due to the Derpinomicon’s magic. She then starts to carelessly spread foal powder all over her nether regions and then carefully tapes the new diaper around her waist.

“Trixie, feels like a new Mare. Now for you Twilight!” Trixie says as she levitates Twilight out of her foalish prison and safely onto the ground. Levitating a diaper out of her saddlebag she effortlessly wraps it around Twilight’s used diaper and tapes it and sprays some air freshener.

“There, that should keep you good for at least another hour. Perhaps if you are well behaved, I will give you a proper change before bedtime.” Trixie says with some vindictiveness in her voice. “Momma Trixie, has some nice surprises in store for you tomorrow!”