Rainbow's Curse

“Huztthwhwaathagoinon?” Rainbow Dash mumbled, rolling over in her crib and bumping her face against the bars. Blinking a few times as she suckled her pacifier, she tried to remember last night. Had she gotten drunk? No… She had…

Mobile. Pony. Something magic bad stuff.

“Mmm!” She yelped, sitting upright and banging her head against the roof of her crib. Everything went fuzzy for a second as she fell back, landing on a surprisingly soft pillow.

No, Rainbow Dash. Don’t panic! Think about what’s going on, you can figure it out.

Sitting up a little more slowly, Rainbow took stock of her situation. Adorable pink pacifier - check. Ugh. Diaper - Did it get even thicker? Freakin’ check. Clothes… Glancing down at them, Rainbow saw a pink dress with what seemed to be a quarter mile of white lace wrapped around it, poofing everything out with more frills than Rainbow could count. Lifting up the skirt to peek at her diaper, hoping that at the very least it would be uncovered, allowing for spanking-free changes, she saw a pair of pink plastic pants pulled over the poofy white padding. At least she didn’t need to use her diaper, as far as she could tell.

Okay, clothes’s taken account for.

“Jeeth, wathwi’ aww da pink?” She mumbled, annoyed.The room was too dark to see much, but Rainbow could definitely make out the painted pink bars of her crib, and  noted the mobile hanging from the lid of the crib. Averting her eyes for a moment, she quickly realized that it wasn’t spinning, and that she didn’t seem as fascinated as before.

Just as she was about to call for help, or at least call to see if anypony was there, a light came through the crack beneath the door and she heard hoofsteps approaching. Before calling out for help, though, she realized that it might be smarter to wait and see what happened. This could just as easily be the pony from before, and if that was the case Rainbow wouldn’t want to draw any attention to herself.

The door handle creaked for a moment, a purple glow making it turn until it slowly opened, lights flickering on to reveal the pony in the doorway…

“Wh-what da hay? TWIXIE?” Rainbow Dash asked, surprising nopony.

The Great and Powerful Trixie, dressed not in her stage costume but rather wearing only a saddlebag. She had obviously forgotten this, given the way she tried to flourish a cape that wasn’t there for a dramatic entrance. “No, it is I, The GREAT and POWERFUL… Oh, yes, it is I, Trixie. And you, Rainbow Splash, are mine!”

“Bu’... Why?” Rainbow asked, confused. “Why da’ heck did you wan’ me?”

“Oh, wouldn’t you like to know?” The Great and Powerful Trixie asked, smiling a sinister little grin. “Fine, Trixie shall tell you…I….

Rainbow leaned forward, eager to know.

“...didn’t,” Trixie finished.

“Uh…” Rainbow said, a little slack-jawed in confusion. If it had been possible, the pacifier probably would have tumbled out of her mouth. “Wha?”

“You were never Trixie’s target,” The Great and Powerful Trixie said, shrugging. “I meant for the poison to reach that no-good Twilight Sparkle… It seems your mail pony is too blind to read shipping labels, though, and so the expertly crafted poison Trixie left in a gift basket for Twilight Sparkle ended up being shipped to your home instead.”

Rainbow Dash blinked a few times at that, a few things clicking into place.

“But it’s fine, Trixie isn’t upset,” The Great and Powerful Trixie assured her, acting as if the pegasus really would have been worried about her. “It gave Trixie a little time to perfect the recipe as I… Experiment.” Her horn started to glow, and Rainbow Dash felt a little tug around her waist. The plastic pants were gently pulled by the magic.

Gulp!

“S-sthop!” Rainbow Dash yelped, quickly, waving her hooves in front of her waist to try and get Trixie to cut out the magic as she felt a pressure growing in her previously empty bowels. It seemed strange to Rainbow that she hadn’t felt the need to pee first, until she felt the spreading warmth on her crotch as the diaper grew wet.

The Great and Powerful Trixie’s magic persisted, though, and the unicorn laughed. “Why?” She asked. “Are you going to have an accident, Rainbow Splash?”

That pun doesn’t even make sense!

“N-nuh-uh!” Rainbow protested, unable to pronounce a solid ‘No’. Even as she said it, though, the tug of magic on the plastic pants made her cramp up, barely able to hold it.

“Then it shouldn’t matter if I stop!” Trixie said, eyes glowing a bit.

“P-pweathe!” Rainbow Dash whimpered, pressing her muzzle against the bars of the crib and giving Trixie and pleading look. “F-fine, I’m gonna have an athiden’, jus’ sthoppi’!”

The magic faltered, then cut out. “Hmmm…” She said, considering the pegasus trapped in the crib. “Trixie is feeling a bit merciful. You can either be let out of your crib and play for half an hour while I get breakfast ready, or-”

“D-dat one!” she interrupted, not even needing time to think about it, cutting Trixie off mid-word. Anything to keep from crapping her diapers again, since Celestia knew when Trixie would let her get changed.

The Great and Powerful Trixie glared at the intrusion on her offer. Horn glowing, the pacifier in Rainbow’s mouth glowed and then tripled in size, making Dashie’s cheeks puff out a bit and totally preventing speech.

“Mmm!” Rainbow protested, unable to close her mouth or stop the drool trickling down her muzzle.

“Much better,” The Great and Powerful Trixie said, nodding. “No more interruptions. As I was saying, I can let you play… Or, I can use a bit more magic, you load your diapers like a little foal, and then I give you half an hour of privacy in your crib. I’ll even turn off the foal monitor.”

Rainbow Dash almost turned down the second option out of hoof, wondering why it was even offered, until the implication struck her and her eyes went wide, pupils a tad dilated as the pieces fell into place. A reminder of how frustrated she was feeling made her seriously consider the option.

I mean, sure I’d have to mess myself, but it’d be fun. Besides, I’m gonna have to go eventually, right?

Right.

Wait, I’m not going to interject or put up a fight or anything?

Nah, I’m sick of arguing. Besides, messy diapers aren’t that bad.

Blushing, Rainbow came to her conclusion. She wiped a little drool off her chin as she nodded sheepishly.

The Great and Powerful Trixie laughed. “So, you’d rather sit around in a dirty diaper for half an hour than play in a clean one?”

Cheeks burning more furiously than ever, Rainbow Dash nodded, not really able to give a more clear answer than the yes-no type with the enlarged pacifier totally blocking off her mouth.

“No problem,” The Great and Powerful Trixie said, and her horn started to glow.

Rather than giving Rainbow Dash’s diaper a gentle tug, though, just enough to make her already pressurized bowels give in, Trixie hit the crinkly pink plastic pants with a magic blast strong enough to vaporize a small house. A fresh pair of plastic pants simply reappeared in their place, of course, but Rainbow’s eyes went wide as the force of the magical blast converted itself into a bowel-filling mudslide. Any control she may have had was totally obliterated and she hunched over, clutching her gut as the curse kicked into high gear. Grunting loudly into the pacifier, Rainbow’s diaper quickly filled with the mushy, mucky mess the magic had summoned. The padding swelled out, elastic expanding to keep everything in one place, plastic pants crinkling in response to all the motion.

Dashie’s weight pushed the mess up the back of the diaper, spreading it a bit as she continued grunting and meeping into the pacifier, rocking slightly as the contents of her gut slid into the back of the diaper. Bowels exhausted, the diaper was stained a light brown and swollen to a roundish smelly mass that reached past her knees and elevated her several inches off the mattress by the time she was done. At this point, the skirt was less covering the diaper and more resting atop it, the bulk of the swollen padding reducing the already scant concealment of her clothes to effectively nothing. She panted a bit, already feeling a tingling sensation in her spine just from putting her weight on the bulk of the mess, catching her breath.

So, naturally, The Great and Powerful Trixie sneered and her horn glowed as she hit the plastic pants again.

This time, Rainbow didn’t even have a chance to fight it. Her back end was too tired from trying to hold it before, and it was all she could do to whimper a bit and buckle as her bowels refilled to the brim and started depositing their contents into the mucky diaper. Moaning in simultaneous pleasure and discomfort as the overfull diaper squished against her, Rainbow Dash snorted shallow breaths through her nose, groaned, and grunted in reaction to the assault on her senses. Pleasure, discomfort, revulsion, and stinkiness were all fighting for top spot in her mental faculties as the second wave of magically induced desperation dissipated, her diaper now nearly the size of her torso as she sank into it, too drained of energy even to sit up.

Pleasure won.

Shifting her weight back to make the bulk of the diaper’s contents mush forward, Rainbow Dash felt a jolt of pleasure and sensation tingling up from between her legs as the messy muck smooshed around.

True to her word, The Great and Powerful Trixie backed out of the door, smirking evilly and cackling as she left Rainbow Dash with a modicum of privacy.

Seeing absolutely no reason to hold back, Rainbow Dash bunched up the frilly pink skirt so it wouldn’t get in the way of her hooves and jammed her hooves into the squishy diaper, pressing it against herself as she rocked her hips forward, moaning as loudly as the pacifier would allow as the mess squished against her thighs and between them. It felt fantastic, and Rainbow fell down onto her back, still rubbing her forehooves aggressively against the front of the diaper.

Using her hind legs, she thrust her waist upward and down, the ridiculously inflated diaper squishing against the crib’s mattress with a satisfying ‘crinkle’ as she did so, and Rainbow moaned again, a week’s worth of frustration all flooding out of her as she finally seized the opportunity to fulfill her suppressed desires. Spreading her hind legs a bit, she kept rubbing with her hooves to keep up the mushy pressure against her hindquarters, using one hoof to try and spread the mess forward so that there’d be more to smoosh against herself.

As frustrated as she had been, there was never a chance that she was going to need the whole half hour. Barely a minute had gone by before her back arced up in a wave of pleasure and she moaned as loud as ever into the enlarged pacifier, ecstasy rolling through Rainbow Dash as she collapsed back down on the mattress, exhausted despite all the sleep she’d had, post-coital bliss making her blink drowsily.

Hind legs a little tangled with all the bulk and padding, she rolled over and got comfortable. Whatever would come later would be fine, right now she felt great. Suckling a bit on the pacifier, she smiled and went back to sleep.