Rainbow Dash and Fluttershy had just finished running a relay race, which they won. They were hot and dripping with sweat. Even Rainbow Dash's skirt and shorts, and Fluttershy's white tank top with short, tight, green gym shorts, were soaked.
Rainbow Dash gave Fluttershy a high five. As she turned around to shake hands with their opponents, Fluttershy couldn't help but stare at her butt. She really liked Rainbow Dash. Not just because her butt was cute, but she really liked her in every other way too. She admired how much braver, stronger, and faster she was, and she loved how loyal she was to her friends. Plus, she found her really attractive. She just had a thing for athletic girls like her. And she really liked her butt. She blushed a little just thinking this. She also secretly thought farts were funny, and enjoyed it a little too much whenever Rainbow Dash unabashedly farted in front of her.
They went their separate ways. Rainbow Dash went to her house to take a shower. Fluttershy, on the other hand, went to Pinkie's house.
Pinkie answered the door. "Hi Fluttershy! What's going on? How'd your race go?"
"We won," said Fluttershy. "But... I don't know what to do."
"About what?"
"Um... Promise you won't tell anyone this?"
"Cross my heart and hope to fly stick a cupcake in my eye!"
"Well... you see... I... I have a crush on Rainbow Dash. I really, really like her. But I'm too shy to tell her. What do I do?"
"Just tell her how you feel. I'm sure she feels the same way. She did ask you to race alongside her, after all. And she farts in front of you more than anyone else, except me cause we both find it funny. I think she notices how you blush every time she does it."
"What if she doesn't like me?"
"There's no way! Seriously, I can tell."
"I... I'm not ready yet." She walked out the door.
...
The next day, Fluttershy got out of bed. She changed out of her pajamas and into her usual white tank top and green skirt with pink panties underneath. They were a little tight, but she kind of liked it.
Once she finished her breakfast, she checked her mail and found a note saying "Meet me behind Canterlot High at 10:00 AM." Her heart was racing. Could this be Rainbow Dash? But how would she know? Surely Pinkie Pie couldn't have broken her promise. Maybe she was right. Maybe Rainbow Dash knew how she felt and wanted to tell her she felt the same way.
At 9:30 she decided to leave. She was so nervous she nearly peed herself. So she made a quick trip to the bathroom, and set out for Canterlot High.
...
Rainbow Dash woke up at 9:00. After yawning and raising her arms, she got out of bed and changed into her white T-shirt, blue jacket, and pink and white skirt with black compression shorts underneath. She hadn't washed them after her race, and while they were dry, they still smelled a bit. But she didn't care.
She finished her breakfast and checked her mail. All that was there was a note saying "Meet me behind Canterlot High at 10:00 AM." She wondered who it could be. Applejack, challenging her to a competition? Pinkie Pie, so they could have fun farting together, maybe with Sonata? Or did Fluttershy know how she felt about her and was plucking up the courage to tell her?
At 9:50 she put on her geode and zoomed out the door.
...
Rainbow Dash and Fluttershy met behind Canterlot High. No one was around.
"Hi Fluttershy," said Rainbow Dash.
"Um... hi Rainbow Dash." Would she be able to tell Rainbow Dash how she felt about her?
Before they could say anything, a bright light suddenly engulfed them, turned them back to back, and slammed them into each other butt-first.
"Oh my..." said Fluttershy, blushing a little, but secretly liking the feeling of her butt pressed against Rainbow's.
"What's going on?" said Rainbow Dash, trying to unstick her butt from Fluttershy's, but only succeeding in rubbing them together. "Pinkie Pie, is this another one of your pranks?"
Fluttershy could barely move due to the pleasure she was getting out of Rainbow's rear rubbing against her tush.
"Let's try walking at the same time," said Rainbow Dash.
They started to walk apart, feeling some sort of glue stretching between them. But, they only got a tiny bit apart before they were pulled backwards, their butts smacking into each other.
Fluttershy squealed, not in pain, but in pleasure, though she tried to hide any signs of it.
Then Rainbow Dash let out a loud fart, which lasted several seconds. She chuckled, finding her farts to be as funny as anyone else's.
Fluttershy made a big secret about how much she loved Rainbow Dash's farts, but she liked it even more when she could feel them vibrating against her rear. However, Fluttershy was also feeling extremely gassy. Usually she'd be able to hold it until she could find some privacy; she would always fart silently but didn't want anyone to smell it. Now the pressure was more intense than she had ever felt.
She couldn't hold it any longer. Fluttershy accidentally released a silent fart, which Rainbow Dash felt against her tush. "Fluttershy, did you fart?"
Fluttershy blushed beet red. "Um... maybe..."
"That's so hilarious!" Rainbow Dash laughed harder. Her fit of laughter caused her butt to rub against Fluttershy's more, and she accidentally let a few more farts. Fluttershy really liked both. But, she didn't want anyone to see them like this.
"How can we get unstuck?"
"Why don't you hold onto that pole, and I'll try running using my speed."
They walked over to the pole, Fluttershy walking forward and Rainbow Dash walking backward, farting a few times along the way. Fluttershy wrapped her arms and legs tightly around the pole, not wanting to be pulled off of it. Rainbow Dash started to run at her super speed. The glue between her and Fluttershy stretched farther than it had ever done before.
Then, Rainbow snapped backward, her butt colliding with Fluttershy's.
"Ahhhh," Fluttershy sighed. "I mean... Oh no! What are we gonna do now?"
"We'll figure that out later. Right now I gotta get some cider from Applejack's."
"What if Applejack sees us like this?"
"She said she left it under one of her apple trees, cause she's spending the day with Adagio. We can get there unseen if I run fast."
"I'm not sure I'm up for... ooh!"
Rainbow ran again using her speed. Fluttershy's feet were off the ground as Rainbow took her along for the ride.
As they ran, their butts rubbed together a lot faster than the other girls had done when running at their fastest. Fluttershy was glad she had used the bathroom before going here, but once she got over how fast she was moving, she noticed the feeling of their butts rubbing faster, and let out another sigh of satisfaction.
Rainbow noticed it, but paid little attention as she reached Applejack's house.
"Let's find it fast before someone notices us," said Fluttershy quietly.
Rainbow Dash and Fluttershy walked around the apple orchard in search of the cider. As they walked, their butts were rubbing each other more softly. Both of them noticed how much they liked it. Rainbow's butt was firm, and Fluttershy's butt was soft, and they each liked how the other girl's butt felt in contrast to their own. As humiliating as it would be for someone to see her like this, Fluttershy thought it was like a dream come true to have her behind attached to Rainbow Dash's.
As she let out an airy fart, she wondered whether she'd prefer to not be gassy for this experience. It was a little embarrassing for her to fart on Rainbow Dash, but Rainbow seemed to like it, and she knew she liked it when Rainbow farted on her. Maybe even this part wasn't so bad.
"You can fart louder if you want," said Rainbow Dash. "I don't mind." She lifted her leg and unleashed another booming fart. Fluttershy couldn't help but giggle at both the sound and the sensation. She didn't mind the smell.
They finally found a six pack of Apple Family Cider under one of the trees. It had a note attached to it with Rainbow Dash's name on it.
"Want some?" said Rainbow Dash.
"Just one will be fine," said Fluttershy. She liked how it felt when Rainbow bent down to pick up the cider.
In the time it took Fluttershy to drink one bottle, Rainbow Dash drank the other five.
PPPPPPPFFFFFFFRRRRRRRRT!
Rainbow Dash laughed. "You gotta admit, the situation we're in is pretty funny!"
BBBBBBBRRRRRRRRRRAAAAAP!
Fluttershy blushed, but giggled a little.
"Wow Fluttershy, I didn't know you could fart like that." She wiggled her butt playfully, hoping Fluttershy would like it.
Fluttershy giggled some more, and, feeling less ashamed of it, let out another long, deep-pitched fart. Rainbow Dash started to laugh, while enjoying the vibration of Fluttershy's fart. "Don't stop unless someone else comes."
"I won't. And... um... I don't want you to stop either."
Rainbow farted in response, and they laughed again, rubbing their butts together playfully.
"Oh, I just remembered, I haven't fed my pets yet today," said Fluttershy.
"On it!" said Rainbow Dash, and she zipped over to Fluttershy's house, once again taking Fluttershy for the ride and giving her another fast butt-to-butt rubbing.
As Fluttershy fed her pets, their butts were grinding together some more, and they continued to fart repeatedly. Fluttershy wasn't even trying to keep her farts silent anymore, she was enjoying this way too much. Rainbow nearly wet herself from laughing too hard.
Once they were done, they stood in Fluttershy's living room, having as much fun with their situation as they could. Both of them were deliberately wiggling their butts into each other, farting as loud as possible, and trying to walk apart so their butts could slam back together.
After a longer time than they could count, Fluttershy said "This has been very fun. I love it when you fart on me, I love the way your butt feels, and... I love you, Rainbow Dash!"
"I love you too," said Rainbow Dash. "And your butt and your farts are pretty awesome too."
Fluttershy blushed. "Oh, thank goodness. I wanted to tell you for a long time, but I was too afraid to. I'd kiss you if our butts weren't stuck."
"I think I know who did this," said Rainbow Dash. She pulled out her cell phone and called Pinkie Pie. "Pinkie, did you tell me and Fluttershy to meet behind Canterlot High this morning, and do... something to us?"
"Of course I did! How's Fluttershy doing?"
"She's having as much fun as I am. Because of you, she was finally able to tell me she loved me."
"That's so wonderful! I was hoping she would. She told me, but made me promise not to tell anyone. So I thought that by sticking your tushies together like me and Sonata do, I'd get her to say it!"
"Well, thanks. Of course, we don't want to be stuck this way forever. How do you reverse it?"
"Twilight put together a device that we use for that now instead of Aria having to use her glue. I'll use it to unstick you, and then get Twilight to make another one for you."
"That'd be awesome! But don't tell her it's for us. I mean, I wouldn't mind being seen in this position, but once they know Fluttershy and I are a pair, they'd put two and two together."
"You have my word! Cross my heart and hope to fly, stick a cupcake in my eye!"
"Great! We're at Fluttershy's house." Rainbow hung up. Both she and Fluttershy let out a boisterous fart, which lasted longer because they held it in for the phone call. It felt even more fun when they farted on each other at the same time.
As they waited for Pinkie, Fluttershy was now farting silently again. The smell didn't matter because Rainbow Dash was also farting. Once Pinkie arrived, giggling at Rainbow's flatulence, she pointed her device at them and pressed a button. In a flash of light, their butts were unstuck.
"Um... Thank you for doing that," said Fluttershy. "I mean, for sticking us in the first place. If you didn't, I'd have never been able to tell her how I feel about her."
"No problem!" said Pinkie.
"Is the farting part of that too?" said Rainbow Dash, who noticed she wasn't farting anymore.
"Of course!"
...
Pinkie told Twilight to make another device, without saying who it was for. Once it was done, Pinkie gave it to Rainbow Dash and Fluttershy, who had as much fun with it as they wanted to.