A few hours later…

Twilight was the first to finally wake up, she slowly lifted her eyes with a pained expression. "Oh… man… my head…" she groaned.

Her vision soon focused, and she was a bit surprised by what she was. She, along with were lying on the floor of Principal Celestia's office, naked, and she was currently spooning Rarity. It all quickly came back to her as she sat up.

"Oh yeah… now I remember!" she realized.

Rarity groaned as she woke up. "Twilight… have you not heard of beauty sleep?" she complained as she sat up also.

"Sorry…" Sci-Twi apologized.

The fashionista rubbed her tired eyes and looked around the room to observe her surroundings. "Oh, so that wasn't just a pleasant dream." She said, still a little bit sleepy.

Twilight blushed. "Yeah…"

"I wonder how long we were asleep for…?" Rarity remarked, rubbing her eyes.

Twilight adjusted her glasses. "Uh… I think an hour… give or take…"

"Oh, I see…" Rarity said.

"You know…" The nerdy girl began.

"What?"

"That was… my very first time…"

"Oh… mine too…"

"Wow… almost hard to believe considering…"

Rarity giggled at this, slightly embarrassed. "Oh you…"

"Boy… all of that fooling around sure took a lot out of us…" Twilight remarked.

"Yeah… but it certainly was something wasn't it?" Rarity smirked.

"Yeah… it was nice…" Twilight admitted, bashfully.

Rarity sighed as she stood up. "Well now, I suppose we should go on home, don't you?"

"Yeah, I suppose so." Twilight stretched her arms and legs out, getting the blood pumping through them again. "I can't believe we actually did it together, in the Principal's office of all places."

Rarity giggled airily. "Well, when you put it that way… it does sound rather naughty…"

Twilight giggled also. "Yeah…" she agreed before remembering. "Oh! I almost forgot, before we go there's one last thing I wanna do."

"What's that, dear?" The fashionista inquired.

Before they knew it, both Twilight and Rarity were in the school library and the bespectacled girl herself was sitting on top of the photocopier machine and having it scan her bare tush just like Rarity had done some time ago.

"I've secretly wanted to try this before, but never really had the chance." Twilight giggled, while light shined from around the sides of where her rear was planted on the copier.

"Tingles, doesn't it?" Rarity remarked.

"Yeah, it kind of does. I feel sooo bad for Cheerilee when she has to come in and see this tomorrow." The nerdy girl grinned coyly, making her friend snicker.

"Indeed." Rarity agreed before a picture of Twilight's bum slid out of the machine, she quickly took it and giggled as her friend hopped off it, looking curious. "Look at that bum! Heh, heh, heh! So beautiful…!"

Twilight's eyes widened a little bit in surprise when she saw the result. "Oh my gosh. It looks even bigger than I imagined it would look." Her cheeks flushed as she examined her first cheek copy, noticing how much her glutes flattened against the scanner.

"Just imagine how I felt when I first saw mine." Rarity giggled, nudging the blushing sciencey girl beside her. "Actually, since we're here anyway, might as well do mine too."

The fashionista smirked and went over to the machine, turning around and hopping up onto it, letting her bare ass squish against the slightly warm scanner, since it had just been used by her friend. She quickly pressed the button and let it scan her tush while Twilight held onto her own and stared at it with a red face.

"Wow, I feel so naughty after doing this." The spectacled girl muttered.

"Even after everything we've already done?" Rarity inquired, grinning while sitting atop the flashing copier.

"It's hard to believe I know, but yeah…" Twilight admitted.

Once Rarity's picture came out, the big-butted girl herself got off the copier. "Yet shockingly… you get surprising used to it. After all, after I mooned someone for the first time I was hooked, line and sinker."

The two of them placed both their copies side by side together to compare. Despite both of them having large rears, Rarity's was just slightly bigger, and took up more of the picture.

"So this is what those protesters saw when we mooned them on the bus…." Twilight stated, staring at the two pressed hams next to each other.

"Indeed." Rarity added. "I almost feel sorry for them, and almost ashamed that my derriere is so embarrassingly large… almost."

"Well… it might be bigger then mine but still… um… it's cute…" Twilight confessed, blushing.

Rarity smiled. "Thank you, dearie. Yours isn't half bad as well." She said, before giving Twilight a friendly hip bump, which made both of their rears jiggle.

The nerdy girl giggled before returning the hip bump and looked back at her and Rarity's cheek copies. "Y'know, when I was on that bus with you, and we both got ready to moon those people. As I turned around and sat up a bit along with you, it gave me a sense of excitement and adrenaline I had never experienced before. Then, when I whisked down my skirt and shorts, and well…. Mooned them. It gave me such an overwhelming feeling of freedom that's hard to explain." Twilight smiled awkwardly, rubbing the back of her head.

Rarity nodded, understandingly. "Go on."

"Maybe it was the cold glass from the window against my butt, or just the idea of showing my bare rear to a bunch of strangers I don't even know, but something about mooning for the first time really got me excited, perhaps even made me want to do it again." The nerdy scientist blushed sheepishly.

"I know exactly what you mean." Rarity assured her. "And should you ever feel the need to again… you can always moon me."

"Really?" Twilight asked, surprised.

"Indeed, and should you feel… frisky…" Rarity said, seductively before giving one of Twilight's butt cheeks a pinch, making her squeak and cover up. "I'll be there as well."

Twilight rubbed where her friend had pinched her rump, but still smiled. "Thanks. Also, if we were to ever hang out again, without the rest of our friends, would you maybe want to try mooning with me again?"

Rarity promptly locked arms with Twilight. "It would be my honor, dear."

Twilight beamed and leaned her head on Rarity's shoulder as they walked out of the library together side by side, completely nude and carrying their butt pics.

---

Later, after a grand stroke luck, the two girls managed to streak all the way to Rarity's house, since it was the closest, hiding behind every bush and car around to avoid being spotted and getting wetter as they continued.

Eventually they arrived at Rarity's front door and pant completely out of breath after running non stop.

"Wow…. that was close, but at least we're at your house now." Twilight said in between breaths.

"Likewise, and we should be the only ones here right now." Rarity replied back.

"Good… I think I'd die of embarrassment if anyone saw us nude." Twilight admitted. "Even if it was our friends…"

"As would I. After all I was already embarrassed when I ripped my skirt and showed my bare bum to you all… if they saw everywhere…" Rarity muttered with a shiver. She quickly composed herself. "Anyway, let's go in, shall we?"

Rarity slowly reached for the knob when Twilight turned and saw something that made her gained a surprised expression. "Oh no! Car coming!" she exclaimed.

The fashionista turned and gasped when she saw the upcoming car as well, it couldn't see them yet, but it would if they stood there any longer.

"Quick! Bushes!" she cried.

Both she and Twilight jumped off the front step and into the bush closest to them. They pulled each other close as they waited for it to pass. Rarity was the closest to the other side of it and she knew it thus, due to her feeling surprisingly daring, she slowly stuck out only her bum out of the bush and gave it a good wiggle.

Twilight gasped when she saw her friend with her tush sticking outside. "Rarity! Your butt! It's hanging out right now!"

"Oh, I'm well aware of that fact." The fashionista responded, a sly smirk barely noticeable on her lips.

"What are you…?" Twilight began before they heard a loud honking noise outside the bush, followed by the sound of tires swerving a little.

Twilight winced a little bit from the sounds of the car swerving but breathed out a relieved sigh when she heard it drive past them. After it was gone, the two started to move and ended up bumping breasts with each other in process, making them giggle, both from the boob bump and the incident with the car.

"Alright, that was pretty funny." The spectacled girl giggled again. "What made you suddenly decide to moon that car?"

"Still had one more left in me." Rarity shrugged, casually. She slowly stood up out of the bush. "Anyway, let us get inside and shower, all this sweat and being in nature is ruining my complexion."

Twilight giggled as she stood up also. "Now perverted but still the same old Rarity," she said, fondly.

"Who says a lady can't let loose and have a bit of fun every now and then?" The fashionista quipped, flipping her hair in an exaggerated manner.

Next Chapter: Chapter 18 Estimated time remaining: 3 Hours, 8 Minutes