The next day as the sun rose, Rarity and Twilight were still asleep until the sun shined on them and their butts. The light bounced off their butts, hit a mirror and shined on them, causing Rarity to slowly wake up. She sat up and yawned as she stretched her arms before rubbing her eyes.

"Oh goodness…. that was some sleep.” Rarity spoke while waking up as she saw her bespectacled friend still asleep with her rear in the air and got a naughty idea on how to wake her up. “Oh, Twilight! time to wake up!”

Rarity went over to Sci-Twi's booty and buried her face in Twilight's butt and gave her a raspberry, waking her up immediately with a scream.

“Ah! I'm up, I'm up!” She spoke, getting startled by her friend's wake up call.

“Well good morning to you too, sleeping booty.” Rarity responded with a naughty smile.

“Ha-ha very funny.” Her bespectacled friend replied sarcastically as she got up stretching her arms and putting on her glasses

“Last night was amazing, but now we must get ready for school.” Rarity informed her while putting her top back on

“Right, hm have you seen my underwear anywhere?” Sci-Twi inquired while putting her top on too as Rarity looked around.

"Hm it appears your undergarments are not here." Rarity observed while looking around as she then got an idea “But not to worry darling, you can borrow one of my panties.”

“Yours?” Twilight repeated in surprise. “What about…?”

“Oh, I always carry a spare with me. Just in case.” Rarity revealed.

"Impressive" Twilight replied

Rarity went to her room and after a couple of seconds came out as she gave the bespectacled girl a pair of purple undies only they looked to be a little on the thin side.

"Um Rarity, what kind of panties are these?" The bespectacled girl inquired.

"Oh those aren't panties darling this is a thong." Rarity replied.

"What's a thong?" Twilight asked, confused by the way it looked.

“Well darling a thong is like a pair of knickers only slightly thinner. I myself am wearing a pair too." The fashionista admitted, as she turned and raised her skirt, revealing the red thong she was wearing. Sci Twi’s eyes widened when she saw that it was wedged between her two large moons.

“Do they hurt?” Sci-Twi asked in concern

“Well a little but in a good way darling.” Rarity responded as she pulled back her thong and let it go, making it snap between her large butt as she yelped in pleasure. “Very good…”

“Wow those must feel good.” Twilight remarked with a blushing face as she then put her thong on and snapped like Rarity did and got the same reaction. "Ooh that does feel good…”

“Excellent darling, now let's get ready and head to school to meet up with the others!" Rarity responded dramatically.

“With our wedged butt cheeks.” Sci-Twi added.

“Yes, with our wedged glutes!” Rarity agreed before giving herself a wedgie as she moaned in pleasure feeling it between her pussy.

“Oooh I will never get tired of this.” The fashionista cooed in pleasure.

---

Later after eating and getting ready, Rarity and Sci-Twi went to school and soon met up with the others at the front entrance. They waved to them as they approached, and they waved back.

“Hey, you two, how's it going?” Rainbow asked.

"Quite excellent, Twilight and I had some fun last night, and we came up with a new idea!" Rarity said excitedly.

“What is it?" Applejack inquired.

“We’ll tell you after school, away from prying eyes" The bespectacled girl stated.

“Aw…! Bummer!” Pinkie whined before giggling. “Bummer. Butt joke. Heh-heh.”

“Pinkie, no butt jokes till after.” Rarity told her somewhat sternly.

“Aw, you’re so mean…” Pinkie complained.

“I have to admit… I never realized how much fun one could have with a butt.” Fluttershy confessed.

“I know! I thought their only use was for sitting.” Applejack added before looking back and rubbing her behind. “Never realized that they were like a symbol of pride…”

“As well as a tool for fun!” Pinkie Pie piped up, giving her rear a shake.

“Yeah, to be honest I kinda walked around my home bottomless all night.” Sunset confessed, blushing.

“I walked back to my room after taking a shower with my towel hiked up to expose my tushie… when no one else was home that is…” Fluttershy admitted.

"I know what you mean, I read daring doo without my pants or undies on!" Rainbow Dash revealed.

“I was baking brownies with my buns out!” Pinkie Pie said, enthusiastically.

“By buns you mean pieces of bread or…” Twilight began before Pinkie winked. “Ah, gotcha.”

“And when my family wasn't around I mooned the cows!” Applejack added with a laugh and a snort. “Boy, did that get their goat… who I also mooned.”

“Well, I’m pleased to hear that you’re all having fun with your derriere’s.” Rarity said. “A trend we can all thank Rainbow Dash for starting.”

The rainbow haired girl bowed. “Thank you, you’re quite welcome,” she said, proudly.

“Though I’m sure some of you have your doubts.” Rarity surmised. Mumbling sounds from most of the others seemed to be enough of an answer for her.

“Well…” Fluttershy muttered, blushing.

“May-Maybe a little…” Sunset admitted. “Which is weird since… back in Equestria… we didn’t normally wear clothes. Aside from special occasions…”

“And as fun as it is, part of me has trouble believing that a butt can actually be considered ‘cute’.” Applejack added while looking back at her own hindquarters. “I mean… it is just a butt…”

Rainbow quickly got in front of the others, standing beside Twilight and Rarity. “Well, it’s not!” she exclaimed. “You said it yourself AJ; a butt is a symbol of pride!”

“And a tool for fun!” Pinkie repeated, grinning.

“It is so much more than what you think it is.” Rainbow stated.

“Exactly, not something to be ashamed or embarrassed by.” Twilight said, adjusting her glasses.

“But something to adore, to treasure, to show the world!” Rarity proclaimed. “Though I can tell by your faces that you don’t quite believe that… yet! But come to my abode after school and we’ll help you see. Rainbow Dash, do you think you can come with me and Twilight first?”

“Sure!” The jockette nodded.

“The rest of you, arrive at the time I decide and not a minute later, everything should be ready by then.” Rarity told them all.

“And um when would that be?” Fluttershy inquired.

“Hm, let’s say around… 3:30?” Rarity replied.

“Sounds good to me!" The party girl responded. The others also voiced their agreements.

“It’s settled then.” Rarity nodded, pleased.

“Yeah!” The girls cheered.

---

Later on, the girls were in class as both Rarity and Twilight were secretly enjoying the chair's coolness on their thong covered butts as class was going on. After class was over, the girls were seen at lunch in an area isolated from the other students.

“Man…! So glad classes were over…” Rainbow sighed.

“Totally! I was sitting for so long I thought my booty fell asleep…” Pinkie replied before she got up, raised her skirt and mooned Rainbow showing her she wasn't wearing undies. “See?”

“Hey! Pinkie!” Rainbow reacted while closing one eye and raising an arm, trying to avert her gaze. “You’re not wearing underwear!”

“I know Dashie, but I had no choice! They always ride up between my dough sacks.” Pinkie admitted.

“Wait, what are those on your behind right there?” Applejack asked as she pointed at what looked to be three balloons, balloons that resemble the ones on Pinkie’s skirt, painted on both of Pinkie's butt cheeks.

"Wait it looks like…” Sunset started before gasping. “Pinkie you didn't…!”

“Oh that? Maud painted ‘em on my tushie last night. Princess Twilight and Sunset about these things called cutie marks. Things that appear on their flanks and tell ’em what their talent is. I figured why not give myself some. I thought they would look awesome!” Pinkie said, shaking her rear at Rainbow.

“Well… it’s somethin' alright.” Rainbow replied, peaking through to see the two marks on Pinkie's butt.

“It sure is.” Applejack agreed.

“Part of me is starting to regret telling you about cutie marks, Pinkie Pie.” Sunset admitted. “And also wishing Princess Twilight hadn’t too…”

"Well if we're all mooning, Rainbow Dash might as well join in." Rarity responded before she also got up, turned around and lifted her skirt to expose the sporty girl to her large twin moons. Twilight quickly did the same as her friend.

“Ah! Hey! Why me!?” Rainbow reacted with a red face. “And are those thongs?”

“Indeed they are. Pretty sexy, aren’t they?” Rarity asked with a flirtatious grin

“Aren't those undies a little on the small side?” Sunset inquired, uneasy.

“And very tight?” Fluttershy added.

“Uh, yes? Why do you ask?” Twilight questioned in confusion.

“N-No reason.” Fluttershy stuttered with a red face.

“Well, if we’re all ‘thanking’ Rainbow Dash'...” Sunset started as she then turned around and pulled her blue pants down and mooned Rainbow Dash.

The rainbow haired girl continued to keep her arms raised over her eyes, occasionally peeking at her friends' exposed rears and giggling.

"Ah, come on, guys, stop it…” Rainbow pleaded, though she didn’t sound like she meant it.

“Ugh! Just what in the world are you girls doing?” A voice suddenly asked. Startled, they turned to see a familiar magic obsessed girl, Trixie Lulamoon, standing nearby. They all gasped in surprise when they saw her.

"Trixie? What are you doing here?” Rarity asked, surprised.

"This is where I eat lunch sometimes. As well as where I practice my-" Trixie started before she knew what was going on "Wait, are you all mooning Rainbow dash?”

"Well, uh... you see we… Ugh, yeah we are…” Applejack admitted as she dropped her skirt and stood up straight. The others all followed suit, with Sunset pulling her pants up.

“You’re… not upset?” Fluttershy asked with a raised brow, noticing the lack of anger on Trixie’s face.

"Upset? Why would I be upset? I love mooning people!" Trixie revealed.

"You… do?" Sunset asked in surprise

"Of course! My last name is Lulamoon after all. And also because I, the big and bootiful Trixie has the most beautiful, most delicious, softest and biggest booty in all of Canterlot High." The magic girl declared in pride.

“Excuse me!?” Rarity responded, sounding insulted.

“Wow! we did not know that!" Pinkie said.

"There is a lot you don't know about Trixie, though what baffles me is why there is a butt print on Trixie's locker,” she pondered.

"Oh, that might have been me.” Rarity admitted.

"That was you?” Trixie asked in surprise and disgust.

“Yes! The one who actually has the largest and most beautiful derrière in Canterlot High!” Rarity stated, firmly.

“Well my derriere is much softer than the two bricks on your rear end.” Trixie shot back.

Rarity gasped, sharply. “Why I never!”

“How big is your heinie anyway?” Trixie questioned, raising a brow.

“Thirty-five inches.” The purple haired girl answered with pride.

“Pfft, mine is thirty-seven inches!” The performer replied, smugly.

“I hardly think so!” Rarity scoffed.

“Are you accusing Trixie of lying?!” The magician demanded, angrily.

“It certainly wouldn’t be the first time!” Rarity countered.

"Okay you two there's only one way to solve this; we meet up after school, go to Rarity's place after she, Twilight and Rainbow Dash have gotten things set up, listen to what they’re proposing and then do a comparison. That sound good?” Applejack offered.

“Trixie thinks that is suitable." The performer responded.

“Yes, I agree.” Rarity added.

“Ooh, my tushie’s twitching with excitement!” Pinkie squeaked.

Next Chapter: Chapter 23 Estimated time remaining: 2 Hours, 10 Minutes