Twilight wasn't the only one to run into difficulties upon discovering the out-of-order restrooms. Fluttershy was in P.E, a class which she quite disliked. Others liked to pick on her for how slow she ran, and how poorly she did in sports, thus she was not surprised when she was the last one picked when it came time to break off into teams.

Another thing Fluttershy hated about gym was how quickly she got winded. It wasn't that she out of shape, it was that she would always try so hard to keep up with everyone else that she would wind up over-exerting herself. Because of this, she had to drink quite a lot in order to stay hydrated.

Which was why Fluttershy was currently trying to refrain from squirming as she waited for her teammate to reach her so that she could run her leg of the relay race. Fluttershy really didn't like using public restrooms. What if someone else was in there at the same time and heard her? So, she would usually have to hold it throughout the school day. But the day was only half-way through and she had to go pretty badly. She wasn't desperate or anything, but the more-than-tiny agitation in her abdomen was starting to become very apparent.

Fluttershy snapped herself back to attention when she realized her teammate was getting closer to her. She scolded herself internally. She'd need to pay more attention to the race. If she acted strangely, she'd risk giving away her problem. And that was something she definitely didn't want to do.

It was now her turn to run. Her teammate had gotten her a pretty big head start, but Fluttershy quickly lost it, fumbling her way into last place. She normally wasn't this bad, but after standing still for so long, the sudden movement had caused the liquid stored up inside of her to crash about in angry waves.

Her belt was pressing painfully into her straining, ever-swelling bladder, forcing her to stop moving altogether for a brief second. She could feel others staring at her as soon as she did. What if they were wondering what was wrong with her? Or worse, what if they KNEW what was wrong with her. The sudden frantic spasm subsided, as Fluttershy, face flushed with embarrassment, forced herself along.

Needless to say, Fluttershy got last place, and her teammates were all glaring at her. She felt so ashamed, that was truly one of her worst efforts in a long time. She took a deep breath, but that just sent new jolts of desperation right to her bloated abdomen. The heavy weight inside of her shook, threatening to break and soak her green skirt at any moment.

There were ten minutes left in the class. Could she try asking to be excused? She shuddered in shyness at the thought of voicing her need aloud. She definitely couldn't do it. She chewed her lip and practically bit it when the couch announced what their next activity would be.

Twenty consecutive push-ups.

Fluttershy winced, trying as hard as she could to think up a way to get out of this one. She couldn't even imagine trying to contain herself while doing something like that. It was one thing to hold her water while standing up or running. It was quite another to have to control her weakening bladder while sprawled out and maneuvering herself vertically.

Still not wanting to call any attention to herself, Fluttershy slowly and carefully got into position on the ground, being as careful as she could not to put any weight on her bladder. At the word 'go', Fluttershy began trying. Her bladder pounded in protest with each push-up, screaming at her about what an awful idea this was.

As she lowered herself one more time, she accidentally went down too far, her bladder grazed the ground and she winced audibly. Only a couple people had looked, but it felt like the whole world was staring at her. She stood back up just as an excruciating tingle rippled throughout her body. She crossed her legs and grabbed herself when she was sure no one was looking, then quickly forced herself to straighten up when someone turned her way.

The sudden spasm had passed, but her bladder was still so, so full and now that she'd held herself she needed to do it again, right away, oh dear, oh dear--- The bell rang, and it was the most blessed sound Fluttershy had ever heard, almost like angels singing. She tore into the school and towards the restroom, only to be greeted by the least blessed sight she had ever gazed upon.

OUT OF ORDER

Fluttershy could feel her bladder muscles giving up. She was about to wet herself right there in hallway. With people everywhere. Just the thought of that made her want to curl up into a tiny ball and cry... She couldn't let it happen. She stilled herself for a few seconds to get everything mostly under control again before she darted off again. She found another restroom and was about to declare victory, when she noticed the sign.

OUT OF ORDER

Why was this happening to her? They couldn't all be like this, could they? She stomped her feet against the floor and shifted her hips back and forth. She needed to find somewhere to release all the pent-up urine before she burst. The last girl's room was on the other side of the school, and she knew she couldn't make it all the way there. Her pee was going to start jetting out at any second, whether she liked it or not.

Unable to move, Fluttershy's bladder pounded insistently and then finally squeezed. Warm fluid surged out of her and bloomed in her panties, tearing a gasp from her. She heard a tiny pattering of liquid against the floor and a blush burned across her face. Her legs gave out and she grabbed herself as she dropped to her knees. She fumbled to push herself back up, continuing to leak. She opened her eyes, which had been pressed shut to avoid having to look at the countless people who were now doubt staring at her, and her vision aligned with an empty juice-cup from the cafeteria.

There was a supply closet not too far away... The cup was big, most certainly big enough... She could... She managed to stem her flow of urine, but she knew that she didn't have much time before it resumed and completely humiliated her. She moaned aloud, grabbed the cup. It wouldn't leak. She could... But she couldn't... But she HAD to...

Glancing back and forth, and shakily forcing herself to her feet, she shuffled as fast as she could into the supply closet. Much to her dismay, the door didn't have a lock on it. So if someone needed to get in here and she wasn't gone... She pressed her back up against it and hoped that she was heavy enough to make a difference. Her face a bright red, she pulled her panties down and maneuvered the cup into position as best as she could. Her hands were shaky and she didn't have much experience with relieving herself into anything besides a proper toilet, but her bladder didn't care about any of that, bursting once more.

The instant she started peeing, Fluttershy felt like she was actually going to pass out from the relief. She moaned in ecstasy as she allowed herself to finally relax. She blissfully closed her eyes and continued to let the urine flow freely out of her overly-extended bladder and into the cup. “Ahhhhh,” she sighs, not even realizing she had done so out loud. It continued to stream down for what felt like minutes, but there was still no sign that it would be stopping at any time soon. As it begins to taper off, she becomes more aware of what a loud sound the spattering of her urine into the plastic cup was making. She really hoped nobody was right outside the door.

Then came the realization that she was actually doing this. She was peeing, in public, in a supply closet, with a door that didn't lock, into a cup. Perhaps she was starting to get over her shy-bladder-problem. When every last drop had finally dribbled out, she sighed once more and blinked her eyes back open. Her few moments of heaven were over, and she examined the damage done to her panties, luckily, the wet patch was barely noticeable, the only way anybody would notice is if they looked up her skirt, which nobody would be doing anyway. She pulled them back up, stepping away from the door for a moment to do so... and it was just her luck that it was flung open as soon as she was finished.

“Oh, hey Flutters!” Pinkie Pie greeted, always cheery. “I thought I heard your voice in here.”

“P-Pinkie!” Fluttershy gasped.

“What're you doing in here, anyways?”

“Uh-”

Fluttershy was interrupted when Pinkie pointed at the cup, which she had set on the ground. “Ooh! Did you get lemonade!? Let me try some!” The pink-haired girl picked it up and brought it to her mouth.

“Pinkie, don't-!”