Chained Down and Diapered Up.

by Nuggetio

Chapters

1 - Waking Up
3 - Final
2 - The Filling Begins

1 - Waking Up

She gasped loudly.

"What the... Where am I?" She looked around, and quickly spotted her friend, Fluttershy.

"Fluttershy?!"

Fluttershy woke up with a gasp, similar to Dash.

"Huh? Where are we?"

"That's what I'm trying to figure out."

"Why are you upside down, though?"

It only now hit Rainbow Dash that she was, in fact, upside down. She panicked, and began to try to move, and then realized something else. She was chained down, unable to move.

"What gives?!" Dash noticed Fluttershy looking towards Rainbow Dash's crotch area.

"What? What's wrong?"

"Look..." Fluttershy nodded at the place she was looking. Dash, looking up, noticed that she wasn't naked like she usually was, but was, in fact, wearing a diaper.

"Oh you've gotta be kidding me..." She said, as her cheeks turned a slight tint of pink.

Rainbow Dash thought back, trying to think of why in Equestria she would be in this room. She then took a look at her surroundings. She first turned to Fluttershy, and observed her. She noticed she was also wearing a diaper. She then turned to view the room. She was in a stone room, almost like a dungeon... Most likely a dungeon. Why else would they be shackled down?

Quite suddenly, a door opened, and both Dash's and Shy's heads snapped to the door

"Hello, little ponies."

"Celestia?" the two ponies said in unison. Celestia casually nodded.

"Why are we in here? What did we do?!"

"It is clear that you have comitted crime against Equestrian law, Rainbow Dash. You have stolen important goods from Canterlot."

"What?! That's crazy! What use would I have for 'Canterlot goods'?"

"Simple. Quite a few things that would catch your interest... As for you, Fluttershy, you have caused harm to the Royal Garden." Fluttershy cowered, not refusing to this at all, even if she knew this was wrong.

"For these crimes, you two shall go through a punishment... One that many seem to dislike."

"What, being tied up and forced to wear a diaper?"

"Yes. That, and then some."

With that, Celestia stepped out, and two guards stepped in. The door closed. The guards stood in front of the door, blocking it.

Dash was confused. "And then some?" She thought outloud.

A few moments past, before the sound of magic being used was heard, and a faint buzzing followed after it. Fluttershy shuffled, and crossed her legs. Rainbow Dash noticed something else on Fluttershy. A slight wire was sticking out from her diaper.

"Flutts... What is that..?"

At this point, Fluttershy stifled a moan, and turned to Dash with an embarassed look.

"I... I... think it's... mff... a vibrator..."

"A vibrator?"

"Y...Yeah... hnng..."

It was clear that Fluttershy was getting uncomfortable. The two ponies sat for a moment. After a while, Dash began struggling a bit more. Perhaps there was something she could move? She did a quick check on her body.
Her hind legs were stuck, clamped down. Those wouldn't be moving for a while. Her forelegs were a bit stuck, tied behind her back. Her wings were folded slightly uncomfortably underneath her forelegs. She then tried to lift her head, only to suddenly choke herself. Something was holding her neck in place.

"Great..."

Fluttershy looked at the guards, giving them her best 'Please help us' look. The guards had no response. It was at this moment that both of them heard a small gurgle.

"Oh boy..."

Dash blushed again, heavier this time.

"Dash... Do you need to go to-"

"Yes."

"Are we supposed to-"

"Probably..."

"O-Oh..."

The two were now noticably blushing, Dash being the more annoyed of the two.

Author's Note

Picture this chapter is based on - https://derpibooru.org/1117680

3 - Final

After a few minutes of pissing themselves, the two stopped, their bladders seemingly emptied.

"Ugh... this is so embarassing..."

More silence.

An abrupt gurgle was heard from Fluttershy's gut

"Seriously? You're not done?"

"N...No..."

Dash rolled her eyes, but then she heard a gurgle coming from her own body. Fluttershy looked Rainbow Dash in the eyes, and began to open her mouth, thinking of making a snarky response.

"Don't."

Fluttershy quickly shut her mouth, but not before making a grunt, due to the still active vibrator.

Fluttershy stared off into space, letting her legs loose. This was a mistake, as she lost control of her bowels as soon as she did this, the shit making the diaper bulge further downwards.

"Sh... Shit..."

A quiet rimshot was heard. Fluttershy looked around, but couldn't figure where it came from.

Rainbow Dash, blushing, had an odd thought. BDSM had always been a fetish of hers, and right now, she was feeling a tad turned on by this situation, despite the fact that it tied into fecal matter. However, part of her had always wanted to explore this alternate concept. However, she never quite had the chance to do it. She thought more.

And that's when she thought "screw it."

She released the shit into her diaper, finally letting here muscles relax, letting it loose. Sweet release. As she did force it out, she let go of her entire crotch area, just focusing on getting it out. She ended up pissing more.

Fluttershy stared as Rainbow Dash promptly, and purposely, let go of her bowels and bladder, letting it fill her diaper. More and more filling Dash's diaper, it bulging out further and further. She decided to follow Rainbow Dash's idea, and let go, the shit filling her diaper too, all of it building up, the vibrator adding onto the experience.

The guards stared at eachother, shifting uncomfortably.

The amount of piss being released in Dash's diaper was now getting a bit excessive, some of it beginning to trickle out of the diaper, and along her coat, this in itself setting her off. Fluttershy's vibrator intensity seemed to kick up, and with this, she came, pissed, and shat into her diaper all at the same time.

After a bit of this, the two stopped. Dash's diaper filled to the brim with piss and shit. She had cum herself, due to the shit finding a way into her cunt, and acting as a makeshift entity to fuck her. Fluttershy had cum twice now, the vibrator being pulled out of her diaper, by magic. Her tongue fell out of her mouth, panting.

Celestia then entered the room.

"You two are free to go."

Rainbow Dash looked up, still partially dazed from the orgasm. "W-What?"

The shackles were suddenly released. Dash fell onto her back, the shit in her diaper being compressed further against her fur, making her moan lightly. Fluttershy fell forwards onto 4 hooves. Celestia left the room, leaving the door open.

"Uh... where are we cleaning up..?"

Celestia didn't answer, she just laughed. Rainbow Dash got up, looked at Fluttershy, and shrugged. She left the room, and Fluttershy followed.

Now they'd have to find some place private to clean up.

Author's Note

Picture this chapter is based on - https://derpibooru.org/1117690

2 - The Filling Begins

There was silence for a moment, before the sound of magic being used was heard again. Dash grunted at this, and Fluttershy began to get slightly panicked. The gurgling in their stomachs was getting louder now.

"Please... stop..."

Fluttershy said, hoping it'd have some effect. There was partial fear in her voice, and Rainbow Dash picked up on this.

"It'll be fine, Flutts... Just a bit of... you know..." She looked up to the diaper she was wearing.

Fluttershy nodded quickly, knowing her friend was right. It'd just be a little bit of an accident is all. A fast approaching one, too. Rainbow Dash soon realized that something was trying to push out. She tried her best to hold it in, but in shock, she could do nothing.

"Oh god..."

Things were going similarily for Fluttershy. She tried her best to hold it, but she just couldn't. She whimpered.
First, Rainbow Dash lost any clenching or control of her bowels, and shit spilled out into her diaper. Due to the fact that she was upside down, it pushed up and then smoothed out against her rump, some of it getting in her cunt. All she could do was stare in shock as she filled her diaper, although part of her was enjoying it...

Fluttershy on the other hoof, was feeling rather exposed. She crossed her legs in a furthermore futile attempt to stop herself from filling her diaper. The vibrator made this even more difficult for her, making her randomly spasm, forcing the shit out at a faster rate.

For a sudden moment, the shitting stopped. The two looked at each other, confused.

"What happened?"

"I... I think they're done..."

"Wouldn't they have told us or something?"

"I don't know..."

It was silent, before Fluttershy crossed her legs again, and whimpered.

They were far from done. A soft, and very quiet sound was heard. Not so quiet you couldn't hear it, but it was there. Fluttershy blushed heavily, as she pissed herself, adding onto the pile of waste. Rainbow Dash knew that she was next, and tried to hold it, only to fail seconds after.

"Euck... How long are they gonna keep this up..?"

She was becoming uncomfortable.

"P...probably for a while..."

whilst Fluttershy was realizing that it was becoming futile to resist this.

Author's Note

Picture this chapter is based on - https://derpibooru.org/1117688