After she regained her breath, Rarity reached into her backpack and pulled out one of the copies she made from earlier this morning. She winced again when she saw her big butt pressed against the screen.

"Oh… what am I going to do with these?" Rarity wondered.

She went through the dozens of copies she made of her rump, feeling naughty just seeing them.

"I guess it couldn't hurt to keep just a few." The fashionista told herself. "But what shall I do with the rest?" She wondered, knowing she can't let them fall into someone else's hands. "Ooh… where's a book of matches when you need one…"

Rarity pondered on how she would go about getting rid of the rest of the copies. "Hm, I could tear them into little pieces and throw them away, but someone may still look through it and find them and put them back together with enough time…" She thought. Rarity wiggled on her seat uncomfortably, before realizing she had a solution right under her bum.

"Maybe I can flush the tiny torn up pieces down the toilet. That way the evidence will be gone!" she realized.

Rarity picked a couple copies she would keep, then put them away in her backpack. She stood up and turned around, looking down into the toilet while holding the remaining copies.

"Well, it's worth a shot..." The purpled haired girl shrugged before tearing some of the pictures apart bit by bit into the toilet before flushing them down the drain. She sighed after it was done.

"See, that wasn't so hard." Rarity smiled, feeling a little bit of pressure lifted off her shoulders. She was about to leave the stall, until she heard the restroom door swing open, almost making her jump.

"Rarity! You in here?" A familiar athletic girl's voice called out.

"I-I'm here." The fashionista replied, her voice a little shaky.

"Whew, glad I found you. Hey, is it okay if I talk with you a little?" Rainbow asked, her voice sounding more sincere than before.

"Sure…" Rarity responded, uncertain how to feel. She stood up and opened her stall door, walking out and finding her friend standing there, looking guilty.

"Look, I'm sorry for making you feel uncomfortable back there." Rainbow admitted, rubbing the back of her head. "I shouldn't have brought that up, especially in front of the rest of them." The jockette wore a genuine expression of remorse.

"You are?" Rarity inquired, surprised that she was hearing Dash apologize to her.

"Yeah, I could see you were getting pretty nervous back there…"

Rarity took a moment to let her friend's words sink in, her body slowly calming down.

"It's alright, Rainbow." She replied, giving her friend a smile. A genuine smile, rather than the forced one she put on all those times before.

"So, do you still wanna talk?" Rainbow inquired.

"Absolutely, but maybe we can chat somewhere else?" Rarity suggested.

"Sure, how about the library? Hardly anyone goes there during lunch."

"Oh, that sounds wonderful." Rarity said, causing her friend to smile.

"Great! Let's go!" Dash declared, before the two of them left the restroom, and strolled down the halls towards the library, Rarity nonchalantly clenching her skirt as she did so.

---

Soon enough, the girls arrived in the library and while Rarity seemed calm and happy she was also still nervous, though she hoped a talk with Rainbow Dash would fix that.

"Well, here we are!" Rainbow announced upon entering the library. No one came to shush her, letting her know no one else was here at the moment. "I see some chairs by that wall over there, next to a bookshelf." The athlete girl pointed over to where she meant.

While the two of them walked over to the chairs, Rarity caught a passing glance of the photocopier against another wall, causing her butt cheeks to clench involuntarily, and her face to blush lightly. Once they got to the chairs, they both took a seat, making the fashionista shudder again when she felt her clenched cheeks make contact with the cold chair. Rainbow looked over at her curiously.

"These seats are dreadfully cold, but I suppose they'll do." Rarity smiled, wiggling on her chair. Dash only shrugged.

"I guess." The jockette replied.

Meanwhile, Rarity flicked her gaze all around the library, while her mind was still bombarded with images of Rainbow's bare backside, along with memories of herself mooning the store. Then suddenly, without even thinking, she asked her friend something she thought she'd never ask.

"So… what are the other times you mooned?" The fashionista asked, before her eyes widened at the realization of what her lips uttered. Her friend looked over at her, a mix of surprise and confusion on her face.

"I thought you didn't care about that sort of stuff?" Dash asked, raising a brow. Rarity's eyes darted around all over the place as mind scrambled for a quick reply.

"I'm just curious, that's all." The fashionista grinned, looking back to her puzzled friend.

"Odd thing to be curious about…" The rainbow haired girl pointed out.

"Well, I remember you bringing it up earlier, and now I can't help but be just a bit curious." Rarity smiled casually. Rainbow was still a little puzzled at her friend's sudden change of attitude, but she decided to play along.

"Alright, if you really want to know…" Dash started, recalling the times in the past she had mooned, which were a lot of times. "One time was during the battle of the bands without you guys knowing."

"Oh? To whom?" Rarity inquired, surprised.

"Octavia."

"So that's why she was still so crossed with all of us after that event…"

"Yeah… in hindsight… not the best time."

"Really?"

"Ok! Ok! That was a bad idea, sorry." Rainbow apologized.

"Any more mistakes like that?" Rarity questioned, raising a brow.

"Well…" Rainbow began. "Not too long ago, I did it to Lyra and Bon-Bon."

"You did?"

"Yup, I saw them sitting on a bench while walking home from practice one day, and thought it'd be funny to moon them." Rainbow couldn't help but smile cheekily.

"What did they do?" Rarity inquired, growing more interested without realizing it.

"Lyra was furious and yelled something at me, and Bon-Bon looked ready to throw up."

"What did she say?"

"I couldn't hear her because I was laughing too hard." Rainbow giggled.

"Oh, honestly!" Rarity huffed.

"Aw, lighten up Rare, and I said I was sorry, what else do you want?" RD questioned.

"What I want is for you to think those kinds of things through." Rarity stated.

"How?" Dash asked.

"Well, you could try doing it to people that don't know you or know where you live." Rarity pointed out.

"Oh, ok, yeah… guess there is that…" Rainbow admitted.

"As well as doing it far from town, doing to someone who deserves it and…" Rarity started.

"Ok! I get it!" Rainbow expressed. "Boy, you sure have thought this through."

"I'm just thinking about this rationally." Rarity replied, blushing a little.

"Also, are you telling me those Timberwolves and Crystal Preppies didn't deserve it?" Rainbow asked.

"Well… They were pretty rude to us, I do admit." Rarity confessed.

"Exactly! It's only fair that I gave them a taste of their own medicine. Plus, it was worth it to see the reactions on their faces." Rainbow snickered at the memory.

As much as Rarity hated to admit it, it was kind of funny seeing their rivals getting angry and disgusted.

"Alright, I admit it. I guess they did kind of deserve it." Rarity said, the corner of her lip curling into a grin.

"Right?" Rainbow remarked, pleased that Rarity agreed with her. "I'm glad we can both finally agree on something."

"Well, that was only because they deserved it." Rarity asserted.

"Say, what made you so interested in mooning all of a sudden?" Rainbow inquired. The fashionista gulped when she heard her friend ask that.

"Uh… well… you brought it up first, didn't you?" Rarity reminded.

"True." Rainbow admitted. "Also, who says I haven't mooned people I don't know." She added.

"You have?" Rarity asked.

"Oh totally." Rainbow looked around the library, before quickly leaning a little closer to Rarity.

"Did you know, one time me and AJ even made a game out of it?." Dash giggled.

"Wait, you did?" Rarity inquired, growing curious.

"Yeah, we would both stand at opposite sides of the road, and moon cars that came down our lane, taking points for each car we mooned. Bonus points if it was a bus full of people."

"Wow, I never knew about that."

"Don't tell her I told you that. No one else except you, me, and her know about that."

"Don't worry, my lips are sealed." Rarity promised.

"Thanks." Rainbow nodded. "We even measured how big our butts were too."

"You did!?" Rarity gasped.

RD nodded. "Uh-huh. Wanna guess what mine is?"

"What?" The fashionista asked, her curiosity becoming more and more obvious.

Rainbow grinned at the fashionista's interested expression. "Do you really wanna know? It might surprise you." The jockette teased.

"Yes, now what is it?" Rarity responded rather quickly.

"About thirty-three inches." Rainbow revealed.

Rarity gasped. "No!"

"Yeah." RD nodded.

"But… but all that exercise…!" Rarity stuttered in shock. Rainbow giggled at her friend's dramatic reaction.

"Hey, I told ya you'd be surprised." Dash chuckled again.

"Still, with all the exercise you do… I'm not even sure how that's possible!"

"I could prove it if you want." Rainbow smirked, standing up and bending over. Rarity grimaced as Dash's rear faced her.

"Oh no! I believe you!" The fashionista replied immediately, causing Rainbow to snicker and sit back down.

"Thought so." The athletic girl smirked smugly. "So what about you?"

"What about me?"

"What are your measurements?"

"I… don't know. And I don't intend to find out!"

"Come on, I told you mine!"

"That was your idea." Rarity pointed out.

"Hey, if you have a big butt, there's nothing to be ashamed of. Heck, I've got a pretty big butt myself."

Rarity gasped, seeming offended by the remark. "I do not have a large derriere. Thank you very much." Rarity replied, sarcastically.

"Sure, whatever you say."

The purple haired girl thought for a moment. "What was AJ's size? If you don't mind me asking."

"Ha! Like I'm telling." Rainbow huffed.

"If you do I might tell you mine." Rarity offered with raised brows and a smile.

"Ok!" Dash accepted, quickly. "It's thirty."

"Thirty? I could have sworn she'd have a bigger bottom than you." Rarity said, astounded.

Rainbow shrugged. "What can I say? Farm work and all that stuff, plus it's mostly just all muscle for her."

"Figures." Rarity nodded.

"Now, what's yours?" Rainbow inquired, curious to find out. Rarity blushed and flicked her eyes around the library another time.

"If I told you, you'd have to promise not to tell anyone else, anyone." Rarity asserted, seriously.

"I promise." Rainbow nodded.

"Pinkie Pie promise?" Rarity inquired, firmly.

Rainbow sighed and did the motions. "Cross my heart and hope to fly, stick a cupcake in my eye."

"Good. Now… here you go." Rarity said as she took out a sewing tape measurer from her bag and handed to her athletic friend.

"Uh… what am I supposed to do with this?" Rainbow Dash questioned, dumbfounded.

"You're going to measure my hips, like I said I… don't know my measurement…" Rarity confessed, sheepishly.

Rainbow simply shrugged. "Alright, if you say so."

Rarity nodded, blushing and stood up before turning around. Rainbow approached her, holding out the measuring tape straight, a little unsure how to go about it.

"So, you want me to just… go around you?" Rainbow inquired, confused.

Rarity nodded again. "Yes… wrap it around my rear, hold a part of it down with your fingertip and let go," she instructed.

Rainbow nodded and carefully followed her instructions, slowly wrapping the tape around her round derriere, while unintentionally feeling how soft it felt. Rarity shivered slightly at feeling someone else's touch on her rear.

"Please hurry, before someone comes in here." The fashionista's large butt jiggled impatiently.

"Alright, alright." Rainbow replied, wrapping the measuring tape around her more, taking note of how the tape sunk a little into her friend's tush, telling her how much fat she had.

Rarity just stood still, while her friend awkwardly tried taking her measurements, praying that no one happens to walk in.

"Ok. I think I got it…" Rainbow declared.

"Well? What is it!?" Rarity asked, anxiously.

"About… thirty-five inches." Rainbow revealed.

"What!?" Rarity exclaimed in shock.

"You heard me." Rainbow stated.

"T-that can't be true! Are you sure you measured it correctly!?" Rarity asked nervously, looking down and trying to see for herself.

"Yup, I did everything like you said." Rainbow responded, bringing more dread to her over-dramatic friend.

"I… I have a large derriere." The purple haired girl stuttered in horror.

"If you mean 'big butt' then yeah." Rainbow smirked as she leaned closer.

"I… I…" Rarity continued to stutter.

"Hold that thought." Rainbow cut in before she plugged her ears. "Ok. Go."

Rarity just stood there, wide eyed in shock while letting the realization sink into her, like the tape did with her tush. She felt like shrieking to the top of her lungs but was too shocked to say anything other than repeating. "I have a big butt."

After plugging her ears for a while, Rainbow looked over at her friend, cautiously un-plugging her ears.

"Rarity?" she spoke up. "Aren't you gonna…?"

The fashionista finally managed to let out a dramatic cry at the top of her lungs that caused Rainbow to wince and cover her ears again.

After she was done, the others all rushed in, as if right on cue.

"What in tarnation is going on in here?" Applejack demanded. "You could hear that all the way from the moon!"

Rarity winced at the last word of her sentence. "Don't say that!" She said, aggressively, making her friends all look at her with confusion.

"Oh, I hope everything's okay." Fluttershy said meekly.

"Are you hurt?" Sci-Twi asked, worriedly.

"Girls, relax. It's nothing like that." Rainbow stated, trying to calm all her friends.

"Then what's with all the screaming?" Sunset Shimmer asked.

"Is there a party going on!?" Pinkie added, excitedly.

"That's your answer for everything." Rainbow pointed out.

"So?" The party girl asked, not seeing the point.

"Rarity…?" Sci-Twi began before their friend quickly ran off out of the library before any of them could do anything, unknown to her, one of the pictures she decided to keep for herself had fallen out of her bag and floated to the floor.

"Hey! Wait! Rare, you forgot something!" Applejack called out. "Darn… too far away to hear…"

"But what is it?" Fluttershy questioned, curiously.

Applejack reached down and picked it up. "I have no ide… oh…" she began before her eyes widen upon seeing the picture and turned away from it, disgusted. "Ah! Oh. No!"

"What? What's wrong?" Sunset asked, alarmed while Applejack looked at it more closely and squinted her eyes.

"Is that Rarity's hiney!?" Applejack exclaimed in shock as she moved away from it again.

Rainbow leaned in to look herself. "Wow… I was right… that is one big butt…"

"Let me see! Let me see!" Pinkie Pie said as she swiped the picture and took a look for herself. "Wowy-zowy! Look at all that tushie!"

Fluttershy peeked over Pinkie's shoulder to get a look, before quickly turning away blushing madly. "Oh my…. Why would she do that?"

Sci-Twi decided to take a look as well, but immediately regretted it. "Oh… that is so… wrong!"

"Why on earth would Rarity do something so… 'uncouth' as she would put it?" Applejack asked.

"Yeah, that's something I would expect Pinkie or Rainbow to do." Sunset spoke up, before turning to the two of them. "No offense."

"None taken, heh, you're probably right." Rainbow smirked, looking over to Pinkie, but not finding her there. "Wait, where did she…"

Rainbow started, then quickly looked over to the photocopier, finding Pinkie giggling while opening the lid.

"Pinkie, come on, now's really not the…" Applejack said, but was too late.

The party girl giggled while dropping her skirt and undies, hopping onto the machine, and letting her doughy cheeks squish against the surface. She pressed a button, before turning to look at the rest of her friends who stared at her blankly.

"What?" Pinkie asked innocently, while light from the machine shined under her tushie.

Applejack shook her head. "You know what? Whatever, we need to find Rarity and find out what's the meaning behind this."

"Heh, behind." Rainbow snickered immaturely, getting glares from the rest of them. "Oh, come on! Lighten up."

"I think I've had enough 'behinds' for one day." Fluttershy said.

"I think we've all had." Applejack reasserted.

"Yeah, we should get to the bottom of this." Pinkie quipped as she and Rainbow laughed.

"Come on, guys…" Sunset urged the two. "That's enough."

"She's right, we need to get off our rumps and find Rarity." Rainbow said, creating more giggles from Pinkie and her. The others just rolled their eyes, clearly unamused.

"Seriously, let's go find her before she gets too far." Applejack stated, before she and the rest began to leave.

"Aww, bummer." Pinkie said, giggling again, and hopping off the machine. She pulled her skirt and undies back up, before turning the copier off and picking up the copies she made. "Wowie! My tushie is almost as big as Rarity's!"

"Duh! You know how much sweets you eat?" Rainbow pointed out.

Pinkie paused. "Huh… I honestly don't know," she admitted.

"A lot of sweets, Pinks." Rainbow stated.

"Hey, you have a big butt too Dashie." Pinkie quipped, wiggling her tush at her friend.

"Heh, got that right!" Rainbow smirked as she wiggled her rump toward Pinkie.

"Teehee! We could be butt buddies!" Pinkie chipped, giving Dash a hip bump.

"I think we already are!" Rainbow declared with a smile as she rump bumped Pinkie back. The two happily squashed their bottoms together. The flesh from both of their butts squished against one another.

"Heh-heh, let's catch up with the rest of them. Race you!" Rainbow stated, before quickly darting ahead.

"Hey! No fair!" Pinkie laughed and followed her. Rainbow looked behind her while in the hallway and saw Pinkie way behind her.

"Na-na! Catch me if you can, Booty Pie!" Rainbow teased, taking the opportunity to quickly, pull down her lower garments and moon her. Pinkie giggled even more when she saw Dash shaking her big blue butt at her.

"Good one Rainbow Dash!" Pinkie laughed. "Or should I say… Rainbutt Dash!"

"Hehe, we'll see who's laughing when I win. Then you'll be kissing my butt!" The jockette taunted, giving her big butt a good spank before hiking her undergarments back up, and taking off with Pinkie right behind her.

---

As the athletic girl raced down the hall, she glanced behind her and was shocked to find Pinkie gone. "What the?" She stopped in her tracks, looking behind her again.

"Yoohoo! Over here!" She heard from up ahead, making her turn around.

At the end of the hall, was Pinkie bending over, with her now big, bare pink butt facing towards Dash.

"Who's gonna kiss who's butt again?" Pinkie teased, her massive butt cheeks jiggling as she wiggled them from side to side.

"You! You're gonna kiss my behind! That is… if you can catch it!" Rainbow challenged before zooming off.

Pinkie looked behind her one more time, sticking her tongue out and pulling up her skirt, before zipping off.

Rainbow merely grinned while running. "It. Is. On!" She said, speeding down the halls at lightning speed. Eventually, after turning several corners, she caught up to Pinkie, who looked behind her.

"Wowzer!" The party girl exclaimed, before Dash zipped right past her.

Rainbow didn't even take a moment to look back, running as fast as she could down the halls. Soon, after covering several hallways, she saw the foyer straight up ahead, which meant she could slow down a little. Once she was a couple feet from the foyer, the jockette stopped. She looked behind her while catching her breath.

"How do you like that?" Rainbow smirked, now assured she was victorious. "I guess you'll be kissing my butt!"

Rainbow quickly whisked her underwear, and pants down right before she sensed a presence in front of her and was met with Pinkie's big booty directly in her face.

"Surprise!" Pinkie sang.

"Gah!" Rainbow gasped, startled before falling backwards right on her butt, shivering as her bare cheeks touched the cold tile floor.

"Well, Dashie. Looks like I win. Pucker up buttercup! Teehee!" The party girl giggled again, wiggling her tushie.

Rainbow just gawked up at her from the ground, staring in surprise at her friend's massive jiggling pink globes.

"But, but how?" The athlete asked, still in disbelief.

"Simple; I ran." Pinkie shrugged, as if it was no big deal. "Now on with the literal ass-kissing, Rainbow!"

"But… but… but that's impossible!" Rainbow exclaimed.

"No butts! Unless it involves worshiping it." Pinkie stated.

"Now get to the kissing! My tushie is chilly!"

"Oh, come on!" Dash complained. "Do I literally have to kiss your butt?"

"Hey, you suggested it first! Now, time for the smooching!" Pinkie beamed while she made exaggerated kissing noises with her lips.

Rainbow grumbled as she got onto her knees, her head on eye level with Pinkie's patootie. She puckered her lips and started to lean her head forward, getting closer to Pinkie's jiggling butt cheeks. She even began to feel the warmth emanating from her bum.

Eventually, Rainbow's lips made contact as she planted a nice wet one on Pinkie's butt. She made a loud kissing noise as she pressed her lips against it and unintentionally tasted it in the process and it was better than she imagined it would be. She didn't realize how long she had been kissing it for, until Pinkie's giggling snapped her out of it.

"Wow Dashie, you must really like my booty!" she remarked.

Rainbow quickly removed her lips from her friend's butt cheek, spitting and making sounds of disgust. "Aw man! I can't believe you made me actually kiss your rump!" She spat again, while Pinkie cracked up.

"Hahaha! I didn't think you would actually do it! Hehe! You may continue if you want to, I won't stop you." Pinkie smirked as she rubbed the cheek she just kissed, which now had a visible kiss mark on it.

The rainbow headed jockette shuddered as she saw the mark she left behind and blushed. "No thanks!" she said, quickly.

"Aw, I was hoping you'd give the other cheek some love too. Oh well." Pinkie sang, wiggling her bare butt one last time, while pulling her skirt and undies back up.

"Looks like you win this time Pinks. But trust me, I won't be the one doing the ass kissing next time." Rainbow declared,

"You sure about that?" Pinkie quipped, wearing a smug smirk of satisfaction. Rainbow grumbled a little.

"Whatever, we really need to find our friends now." The jockette walked by her friend, but not before giving her butt a quick pinch.

"Ah! What was that for?" Pinkie whined, catching up and giving Dash a pinch back. "There! We're even now."

They both continued to walk together, looking for the rest of their group. While they walked side by side, Pinkie giggled again.

"I guess this means we can be mooning buddies too!" Pinkie chipped, making her friend giggle a little.

"Yeah, I guess we are." Dash smirked, giving Pinkie another butt bump before they headed off.

Next Chapter: Chapter 8 Estimated time remaining: 4 Hours, 54 Minutes