Fluttershy chugged down glass after glass of water.

It was a hot summer day, and she had just finished a game of buckball with Rainbow Dash and Applejack, with Pinkie Pie on her team. So, naturally, she was very thirsty. Applejack poured several cups of cider from a barrel she brought with her, and they all drank several cups of cider. Fluttershy drank ten glasses of water and six cups of cider.

After shaking Rainbow Dash's hoof, Fluttershy returned to her cottage to feed her pets, and see that they were all doing all right. This took about a half hour.

Once she was done, she made her way to the train station, for she had volunteered to enter Rarity's fashion show in Manehattan. She felt nervous about going onstage, but at least this time she knew there would be many other ponies onstage with her, which was a lot easier for her, since she didn't have much difficulty with the fashion show alongside her friends for the dresses Rarity designed for the gala.

Fluttershy and Rarity sat together on the train as it started its journey to Manehattan. Only a few minutes into the train ride, did Fluttershy realize she needed to pee. She realized that she had forgotten to take her morning pee today, and all she had drank after the buckball game had gone through her. She held it in, too shy to tell Rarity she needed to use the bathroom, and hoping she'd get the chance at Manehattan.

They reached Manehattan, and went to the building where the fashion show was taking place. Fluttershy glanced toward a bathroom they walked by, but was too shy to ask Rarity to stop.

Rarity showed Fluttershy and two other mares the outfits they were to wear. The other two mares picked their outfits first, leaving Fluttershy with a skintight sparkly purple jumpsuit. Fluttershy put it on with difficulty, concealing her need to pee.

Rarity's team would be going onstage last, with four other sets of ponies going before her. The fourth of which was Suri Polomare's team. As Suri walked by Rarity after her turn, she sneered at her and said "Your stupid outfits will never beat mine." She kicked Fluttershy in the butt, nearly causing her to lose it, but she held it in.

Fluttershy and the other mares went onstage. Fluttershy was very nervous. She knew the attention would be shared with the ponies on either side of her, but if she peed in Rarity's outfit onstage, it would be unbelievable humiliation for her!

Soon, she walked off the stage, and Prim Hemline declared Rarity the winner. As Rarity took her trophy, Fluttershy seized the opportunity and ran to the nearest bathroom. Once inside, she saw to her dismay that the stalls were all full. Fluttershy didn't want to keep Rarity waiting, so after waiting for about half a minute, she ran back outside to rejoin Rarity.

Fluttershy was very uncomfortable for the train ride back. Rarity didn't notice, because she was too satisfied at having won the fashion show, and Fluttershy was concealing her desperation, trying hard not to fidget.

"Fluttershy, darling, you can change out of that outfit if you want," said Rarity. "It is a hot day."

"Um..." Fluttershy hadn't removed it because she was afraid she might pee if she tried to take it off. But, she wanted to hide her desperation. "I want to wear this all day as a symbol of how amazing your fashion designs are."

"Aw, that's so sweet."

Fluttershy bit her lower lip. She had always been too shy to say when she needed to pee, resulting in her holding for extended periods of time. Usually she could hold it for a long time, but one time after a cider drinking contest with Rainbow Dash three years ago, she had peed in her bunny costume after passing up numerous chances to go due to her bladder shyness. Fortunately she had been right next to a river and deliberately fallen into it, so that no one had ever known. Her holding capacity had increased since then, but she wasn't sure how long she could hold for.

Finally, the train arrived at Ponyville. Fluttershy ran toward her cottage.

"Fluttershy!" came a voice. She turned to see Rainbow Dash. "Wanna do an aerial relay with me? I'm racing against Spitfire and Soarin at Cloudsdale!"

Fluttershy didn't want to race. She wanted to find a bathroom. But she couldn't disappoint Rainbow Dash, and she was too shy to say why she refused. "I... I'd love to."

Fluttershy and Rainbow Dash flew to Cloudsdale. Fluttershy trying her hardest to hold it in.

"Why are you wearing that outfit?" said Rainbow Dash.

"It was for Rarity's fashion show," said Fluttershy. "And she won. I'll wear this with pride for the rest of the day."

"Suit yourself," said Rainbow Dash.

They reached Cloudsdale, and stood at the side of the arena.

"There's still a few minutes before the race," said Rainbow Dash. "I have to go to the bathroom." She ran into the bathroom.

Fluttershy wished there was another bathroom close by so she could go without making a fuss.

Once Rainbow Dash was out, she said "Do you need to go to the bathroom too?"

"I..." Fluttershy blushed a little. This was her chance, but... "I'm fine."

"All right, then let's go!" said Rainbow Dash, flying to her starting position.

Fluttershy flew to the start of the race beside Soarin, regretting her decision to not use the bathroom.

"Ready... get set... go!" said the announcer.

Fluttershy and Soarin took off. Soarin was a Wonderbolt, one of the greatest flyers in Equestria, and most ponies wouldn't be a match for him, especially Fluttershy.

But Fluttershy needed to pee really badly. Desperate to finish the race and find relief, she flew faster than she usually would, and was only slightly beside Soarin when she reached Rainbow Dash and gave her the horseshoe. Rainbow Dash won the race.

As Rainbow Dash claimed her trophy, Fluttershy sneaked off to the bathroom, only to find it was lined up with ponies that had been sitting there for over an hour waiting for the show. She stood in line for a bit, but upon seeing Rainbow Dash fly back with her trophy in search of her, she walked back over to her.

"Wow, you flew pretty fast," said Rainbow Dash.

"I... I knew you really wanted to win," said Fluttershy. Her outfit was soaked with sweat, but she knew it would still be noticeable if she peed herself.

Rainbow and Fluttershy flew back to Ponyville, and by the time they arrived, the summer heat had evaporated all the sweat off Fluttershy's outfit. Fluttershy ran toward her cottage, hoping to get to the bathroom this time.

"Surprise!" said Pinkie Pie, jumping out with some balloons and streamers.

Fluttershy was startled, and nearly wet herself there, but she just managed to hold it in.

"I'm throwing a spontaneous and random party at Sugarcube Corner, and you're invited!" said Pinkie Pie, giving an invitation to Fluttershy.

"When it this?" said Fluttershy.

"Right now!"

"All right." She really needed to pee, but she didn't want to disappoint Pinkie Pie, and would probably have a chance to use the bathroom at the party.

They walked to Sugarcube Corner, and the festivities of the party began. Or rather continued, since Pinkie had noticed Fluttershy walk by and ran over to invite her.

During Pin the Tail on the Pony, Fluttershy quietly tiptoed to the bathroom, but found it occupied. She sat in view of the bathroom door, fidgeting a little as her need to pee grew by the minute.

Lyra Heartstrings came out of the bathroom, and Fluttershy was about to go next when Shoeshine ran into the bathroom. Fluttershy waited for her to come out, feeling the pressure grow more.

"Hey, Fluttershy!" said Pinkie Pie. "Wanna try some cake?"

Fluttershy couldn't refuse. Pinkie cut a slice of cake for her, which was delicious, but she couldn't fully enjoy it with how badly she needed to pee. Once she was done, and she noticed Shoeshine in the room, Fluttershy made her way to the bathroom again, but it was occupied once more.

Before whoever was in could come out, Pinkie called her over to Twilight Sparkle reading a Daring Do book to them. Once she was done, the party was over.

Fluttershy decided she would run back to her cottage and use the bathroom there, for she wasn't sure how much longer she could hold it for.

"Fluttershy," said Twilight, "I'm going to Canterlot to preside over an animal event. Would you like to come?"

"An animal event?" said Fluttershy. She couldn't say no. "I'd love to!"

They boarded the train for Canterlot, and once again Fluttershy was too shy to use the bathroom on the train. So she held it in and hid all signs of her desperation from Twilight.

When they reached Canterlot, Twilight led Fluttershy to the garden. Fluttershy wasn't sure of what Twilight was doing, or what the event was about, but Twilight told her she could play with the animals. Fluttershy did so for about five minutes, until a jolt from her bladder reminded her how badly she needed to pee. She ran to the nearest bathroom, but once again, all the stalls were full.

She returned to the animals and played with them for another half hour, having fun and forgetting her need to pee for a while.

Until she leaked a bit into her skintight outfit. Fluttershy let out a small whimper. She knew she couldn't hold it much longer. So, she walked up to Twilight, positioning her legs so that the damp spot on her outfit wasn't visible.

"Um... Twilight... there's something I forgot to do back at my cottage. I hope it's all right if I leave."

"Sure," said Twilight. "You can always come back when you want."

Fluttershy quickly ran to the train station. The train wasn't coming for another five minutes, and Fluttershy waited impatiently for it to get here, pee dancing. About a minute before the train's arrival, she remembered the train station had a bathroom, and ran to it, but found it occupied.

Then the train arrived, and Fluttershy ran onto it. With no one to tell of her need to pee, she quickly ran to the train's bathroom, but to her horror it had the dreaded "Out of Order" sign on it. Fluttershy whimpered and sat back down. No one else was on the train so she fidgeted hard with her legs crossed tight. She really needed to go.

After what felt like hours, the train reached Ponyville, and Fluttershy ran to her cottage.

"Fluttershy!" came Applejack's voice. Fluttershy turned as Applejack ran over to her.

"Yes, Applejack?" said Fluttershy, trying to ignore the throbbing in her aching bladder.

"Some damn beavers are making a dam at Sweet Apple Acres," said Applejack. "Can you get them to stop?"

"Of course," said Fluttershy, feeling very uncomfortable. She leaked a little more when they reached the dam, at the sight of the water there.

Fluttershy walked over to the beavers.

"Please stop making the dam at Sweet Apple Acres," she said, trying to keep the desperation out of her voice. "It really doesn't go a lot of good for the ponies living there."

The beavers cursed at her.

"I SAID STOP!" said Fluttershy. She put both her hooves over her mouth, but the beavers took down their dam and ran.

"Thank you kindly, Fluttershy," said Applejack.

"Don't mention it," said Fluttershy, and she ran.

She raced back to her cottage as fast as her legs could carry her, dribbling the whole way. The crotch of her outfit was wet, but not soaked, as she finally reached her cottage.

Just as she was making a break for her door, a humongous dragon flew by just above her.

Fluttershy froze. This dragon meant no harm, and was just doing a peaceful fly-by, but Fluttershy was still terrified of big dragons. She trembled with fear as she began peeing herself uncontrollably. She could feel the crotch and back legs of her skintight jumpsuit become soaked, and within seconds she was standing in a huge puddle.

She peed for just under two minutes. The dragon was long gone, and Fluttershy sighed of relief, both that the dragon was out of sight, and that her bladder was empty.

It then hit her that she had wet herself. Again. Her outfit was soaked and she was standing in her own puddle of piss. She sat down in her puddle, blushing beet red with shame, and began to sob.

She quickly pulled herself together, reminding herself that no one had seen her accident. It was hardly the first time, and she'd gotten over that too. She allowed herself to enjoy the relief of her empty bladder after holding it in for so long, and then entered her cottage, made her way to the bathroom, and started a bubble bath.

She'd make sure to wash this outfit thoroughly for Rarity, and she'd tell her that she wanted it to be completely clean because it had gotten a little sweaty during her race with Rainbow Dash. For it had been, and Rarity was fussy about that. She felt much better knowing that no one would ever know.

And, a part of her had secretly enjoyed wetting herself.