Later on in class, while some students were half asleep others were actually trying to pay attention to what the teacher was saying, keyword, trying. Rarity on the other hand couldn't help but continue to think of the full moon Rainbow Dash gave to Crystal Prep not too long ago. She didn't know why she was thinking about it, and it disgusted her that she was. The art of mooning to her was so unladylike and distasteful and yet… part of her found it interesting.

Why did Rainbow enjoy showing off her bare buttocks? She knew at least a small part of the reason was because it was for mocking and to rile up the Crystal Prep students, but what were the other ones?

She thought about asking Rainbow Dash more about it but not only was she not in the same class as her at the moment but after everything she said about mooning earlier Rainbow Dash would never let her live it down if she asked about it.

The whole scenario was still fresh in her mind, from the moment Rainbow saw the bus, the smirk she had as she turned around and stuck her pants out, and when she pulled them down. Rarity grimaced and gripped her pencil harder, cursing herself for having such a vivid memory. She glanced over at the clock to see how much time had passed.

It was almost time for class to end and that was when Rarity got an idea in her head.

"Hmm, what if… instead of asking Rainbow Dash about it… I try it out for myself?" she wondered.

She quickly shook her head, trying to get rid of the thought. "No! I couldn't possibly moon someone! I'd be shamed, humiliated, exiled, laughed at! But wait! What if… it's not another person?" The fashionista wondered with interest. "Instead of someone, it could be something."

Rarity glanced at the clock again, saw the reflection in it and it hit her just as the bell started to ring.

"That's it!" she said rather loudly. A couple students glanced over at her with confused looks, causing the fashionista to blush a little. "Oops."

The other students simply shrugged and gathered their belongings before heading out the door.

Rarity was the last person to leave the classroom, and she watched as the last few students went down the hall and turned out of sight. Almost certain no one was watching her, she headed down the opposite side of the hall, made sure no one else was down there and headed to the door in the middle of it, the door to the ladies bathroom.

Upon entering the bathroom, she went ahead and listened for a bit for any noises, as well as check under the stalls just to be sure. She needed to be absolutely certain she was alone for this. She wished she could brace the door with something to make sure no one would walk in on her but given that it was a bathroom there seemed to be no chance of that.

"Oh well… I suppose this is the best chance I'll get." Rarity told herself.

She went ahead anyway and double checked just to be sure, it wouldn't hurt to be extra cautious. She waited for someone else to step in just then for a little while but after a few minutes she realized that was no one was coming for now, so she had to do it before it was too late.

The fashionista faced the mirror looking absolutely nervous and made a loud gulp.

"Okay, just turn around and do it. Don't think about it too much, just pull them down… see how it feels." She tried telling herself. Looking back up into the mirror, she swallowed and turned around, her back now facing the mirror. Next, she unzipped and bent forward a little, the back end of her skirt sticking out. Now came the hard part, for her at least. She slowly inserted her fingers under the waistband of her skirt and panties, growing more and more nervous each passing second.

"Well, here goes something…" The purple haired girl thought in her mind before she finally forced herself to do the unthinkable.

Rarity slowly pulled her skirt and panties down as far as she could, exposing her rear end bit by bit until it was finally fully exposed by the time her skirt and lingerie reached her knees. As she did this, she bent forward more and her now bare butt jutted out even more. Out of curiosity she peeked behind her in the mirror and was absolutely surprised by what she saw.

"Oh my…" She said out loud, before covering her mouth. "I didn't expect it to look quite so… round." She blushed as she examined her rather large rear end in the mirror. "Has it always looked this big…!?"

She gasped in horror when she realized that Rainbow Dash was right, she did have a big butt, so big in fact that her two hands probably couldn't cover them both and her two cheeks looked like twin moons in the mirror. In fact, the position she was in made sure her rump took up most of the mirror and it mortified her.

"Oh… could it be that I've inherited my mother's hips!?" she asked out loud before gasping again "Or worse! Maybe it's all that ice cream and sweets I ate! I-I never considered that…"

She looked over every curve her admittedly large derriere had and tried to set apart the fat from the muscle. "I should really cut back on the ice cream and pastries." She told herself, in some attempt to justify her rear size. As she continued to moon the mirror, another thought entered her mind. "What if I were to just… give it a little… wiggle? But wouldn't it shake too much…? Oh well… I suppose I wouldn't know for sure until I tried… right? Besides, no one else would ever have to know about this"

The fashionista blushed an even deeper shade of red, as she gulped, put her hands on her knees and just barely gave her tush a little shake. As she did so, an arousing feeling washed through her body, one that made her continue to 'shake it' as it were, barely noticing how much her booty was jiggling.

"Wait… am I actually starting to… enjoy this?" A new look of terror washed over her face at what she just thought to herself. She took a moment to breath slowly and reassured herself. "Focus Rarity, remember, only you will know about this."

Just then, her hand, as if it was acting on its own, rose up high above her head and positioned itself above her bottom. Then, not even thinking about it, she brought it down onto one of her butt cheeks, making it ripple upon impact and creating an angry red hand mark plus a certain sound. A stinging pain soon followed that made Rarity shake and moan with pleasure.

Her eyes widen as she quickly covered her mouth again, realizing what she just did. Rarity's eyes darted to the door and stayed as quiet as possible while she waited for any other possible sounds, such as feet walking down the hall or approaching the door.

When all was silent, she gave another sigh of relief. "I can't let myself get too carried away. After all, this is still in a public place." Her eyes went back to the mirror and her posterior still sticking out, and as much as she hated to admit it… there was something… strangely enjoyable about revealing herself in such a manner, even if it wasn't directed at a person.

"Now I know what Rainbow Dash was experiencing earlier this morning. Well…. Sort of." Of course, mooning a mirror was not the same as mooning a bus full of people, and it made the fashionista shudder a little involuntarily as she imagined herself mooning that bus.

She knew she didn't have the courage to something like that, but she knew she had to try it out at least one more time.

"In which case…" The white skinned girl muttered. "It should probably be a person this time…"

While she thought about who it should be, she quickly scrambled to pull up her underwear and skirt back up to her waist.

"But who should it be? It would be horrible if someone from around here saw," she thought. "Then they would tell their friends and their friends would tell their friends and so on… until it reached Canterlot High, and life will be over."

The thought of gossip about her mooning spreading across the whole school sent a shiver up the fashionista's spine. And she couldn't even begin to think about how her friends would react to it, she knew Applejack always told her to be honest, but this was something she just couldn't tell them, especially not how big her rear was. Rainbow would probably have a hoot about it and brag about how she was right and that she should exercise more.

The more she thought about it, the more she started to really question whether she wanted to moon someone. The thought of it excited, terrified and disgusted her all at once.

If she was going to go through with this, it would definitely have to be directed at someone that doesn't know her. Without a doubt. She might also need a quick way to escape if things don't go down smoothly.

"Hmm, where would be a good area that has a few people, but not too many, as well as have someone that doesn't know me. But where?"

Truth be told, she didn't have a place in mind yet. Then, just like that, a lightbulb turned on inside her head. "Well, if I remember correctly, there is this one store I visited not too long ago. The customer service there was absolutely atrocious, not to mention their dresses weren't even all that good. This could be the perfect 'payback' as Rainbow Dash would put it." She grinned as a mental image played out in her head. "Oh, I know it's crude, but it'll feel so good to pay them back."

With her mind now finally made up, Rarity burned the plan into her memory and left the bathroom to continue on with her day, at least until it was time to head off to the store and give mooning one last try.

As she exited through the main front doors of the school, Rarity spotted the rest of her friends gathered around by the statue. A familiar rainbow haired girl waved over to her.

"Hey there, Rares!" Dash called out, prompting the fashionista to come over.

Rarity did her best to put on a convincing smile and headed to the statue to join them.

"Hello girls." She said, still thinking about the plan she made earlier. "Talking about anything interesting?"

"Well… sorta." Sunset admitted, scratching the back of her head.

"Sorta?" Rarity repeated.

"Rainbow Dash here was just telling us about how she mooned a couple of Crystal Prep students on the way to school." Applejack revealed, gesturing to the proudly grinning female athlete near her.

"Oh yes… that." Rarity said, trying to sound flat voiced and not show any interest.

"She said you were there too." Fluttershy told Rarity.

"Unfortunately." Rarity sighed.

Rainbow smirked smugly. "Oh, I made sure those stuck up crystal preppies had a good view of this moon." She rubbed the back of her pants.

"Aw, I wish I could have been there!" Pinkie whined slightly. "Mooning sounds super, duper fun!"

"I… don't think so." Sci-Twi confessed. "I mean… showing your bare buttocks to a bunch of people… it's gotta be at least a little embarrassing…"

"Are you kidding? It was awesome!" Rainbow expressed. "Sure a bunch of Crystal Prep students saw how fat my ass is, but it was so worth it and felt so good."

"Good to know…" Rarity said, slowly as she began to get more and more nervous and adjust the back of her skirt,

"Still, when are you gonna grow up, Rainbow Dash?" Applejack scolded her.

"Who are you? My mother? Also, don't act like you've never done it before AJ." Rainbow complained, annoyed.

Applejack blushed a little bit at the remark. "Hey now, you've done it plenty of more times than I have."

"Least I admit it." Rainbow stated.

The country girl grumbled. "Besides, I've only done it to those that deserved it."

"Sure thing." The athlete replied, rolling her eyes.

"You know… I don't think I've ever met your Mom before… or your Dad." Pinkie Pie realized.

"Oh well there…" Rainbow began.

"I… think we're getting off point here." Sunset Shimmer cut in. "Look Rainbow Dash, I know you enjoy a good laugh but there are limits as to what you can do."

"Aw, cheer up you guys. It's all in good fun. There's nothing wrong with showing off the full moon every now and then." Pinkie chipped in, smiling brightly.

"Exactly! Not to mention their faces were hilarious." Rainbow said, giggling at the memory.

"But with you being so popular if other people saw you do that they might feel like they have to do it too!" Twilight added.

"Please! Rarity was there and she still thinks it's gross. So no chance of that happening." Rainbow declared, confidently.

"Nope. Not at all…" Rarity said, practically lying through her teeth now while her ass practically shook with anticipation.

Applejack looked over at the fashionista with concern. "You alright over there, Rarity?" The country girl asked.

"Who, me? I'm fine!" Rarity replied, still feeling a little uncomfortable about the topic.

"Uh-huh…" Applejack mused, convinced.

"I'm sorry to cut this stay short, but I've got somewhere to be soon." The fashionista announced, before getting ready to take her leave.

"Really? Where are you going?" Rainbow asked, making Rarity wince a little.

"Oh, um, I need to be at the… the… library! Yes!" Rarity lied, smiling nervously.

"Do you even know where the library is?" Rainbow questioned.

"Of course I do! It's you that has a hard time finding it." Rarity pointed out, causing Twilight to gasp in shock.

Rainbow opens her mouth to protest before realizing it herself. "Yeah…" she admitted.

"Anyway… ta-ta!" Rarity said before she ran off like a bat out of hell, leaving her friends puzzled.

Next Chapter: Chapter 3 Estimated time remaining: 5 Hours, 51 Minutes