With that, both of them finally stepped off the bus, standing closely to each other. The bus didn't waste a second and pulled away once the two girls hopped off. Twilight's eyes went wide, and her legs shook, feeling the sudden cool evening air brush gently against her bare legs, as well as her nether regions.

"Oh my gosh…." The science girl said out loud, blushing brightly while this brand new sensation washed over her. The fashionista next to her giggled at her reaction.

"So, how's it feel?" Rarity inquired curiously, looking over at her friend with a grin.

"It feels kinda weird. Like, it feels nice, but also incredibly terrifying." The techie replied, her hands resting right by her skirt, just in case a sudden strong breeze blew by.

"It's exhilarating! Isn't it?" Rarity expressed with glee.

"Maybe a little bit…." Twilight said, uncertain of what emotion she was feeling the most at the time being.

Rarity looked around them as they both stood right in front of the planetarium. No one else was around at the moment.

"Hmm, where is everyone at?"

"Oh, this is normal. Usually my bus arrives about five minutes earlier than everyone else, give or take." Twilight explained.

"Ah, that makes sense." The purple haired girl replied, looking around at their surroundings. "So, what do you normally do?"

The techie shrugged. "Just wait for everyone else."

The two of them stood quiet next to each other. Rarity looked down the road the bus just left on, listening closely. Another grin slowly grew on the fashionista's lips, and she nudged the sciencey girl by her side.

"I have an idea. Let's both moon the road quickly." Rarity suggested, grinning mischievously.

Twilight looked over at her friend, puzzled. "Wait, why?"

"Oh, I just think it'll be really fun and daring. You never know whether or not another bus will turn around the corner." Rarity giggled giddily, getting excited at the mere thought of almost getting caught.

Twilight blushed again. Even though it sounded extremely risky, it was also highly intriguing to the nerdy girl. Plus, with her undies and shorts now gone, it would make the act much more simpler. Slowly, the science girl began to grin as well. "Ooh, sounds risky, but also naughty. Let's do it!"

"Absolutely!" Rarity nodded as they both, turned, grabbed their lower clothes and prepared to lift/lower them and bare their rumps. "Ready?"

"Ready!" Twilight nodded.

"Alright then, on the count of three. One…." Rarity started, bending her knees and inserting her thumbs under the waistband of her shorts and panties.

"Two…." Twilight continued, leaning forward as well and sticking her skirt clad butt outwards towards the road.

"Three!" They both declared in unison, before doing the act. Rarity whisked her shorts and panties down to her knees, revealing her massive white derriere to the empty road. As she did so, her knees touched together, jutting her titanic tushie out even further.

Twilight bent forward a bit more, before lifting the back of her star covered mini skirt up, showing off her large purple moon.

The two naughty girls giggled excitedly as soon as they felt the chilly evening breeze brush along both of their big bare butts.

"Ooh! This is so cool…!" Twilight shivered.

"I know right?" Rarity beamed.

"Yeah!" The sciencey girl nodded, smiling.

"And as a bonus, you wanted us to spend more time together, did you not?" Rarity reminded.

Twilight giggled. "You're right. I guess this does counts as spending time together."

The two started wiggling their rears from side to side, putting on a show to an invisible bus full of people.

"Hehe, we're mooning in front of the planetarium." The sciency girl stated, smirking over at her friend, who shot a naughty grin back.

"Oh, indeed. We certainly bring a whole new meaning to the term full moon." The fashionista added. Both of them snickered, while still impishly shaking their butts.

"You won't need a telescope to see this moon." Rarity said while smacking her butt.

"Nice touch." Twilight admitted.

"Thank you." The fashionista grinned, proudly. A faint pink hand print was left behind on her left butt cheek. Her twin moons jiggled even more than before now.

Twilight giggled and gave her own bare booty a spank, causing her butt cheeks to jiggle as well.

"As much fun as I'm having, I'd say it's about time we cover up." Rarity told her friend.

"I was about to say the same." Twilight confessed.

Rarity soon pulled up her undies and shorts while Twilight dropped her skirt to cover her bare rear up again.

"Thanks for doing this with me, Twilight." Rarity said. "It has been splendid to do this with another girl."

"I should be the one thanking you." Sci-Twi confessed. "I never thought I'd have more fun."

"It turns out we both have a naughty streak." Rarity smirked and gave the nerdy girl next to her a hip bump.

"Yeah, guess we do." Twilight smiled as she returned the hip bump, which soon became a butt bump.

Both girls giggled giddily among each other, relishing in the enjoyment the two of them were having bumping butts. They each felt the flesh of their twin globes jiggle with each bump.

"Ooh! Idea!" Rarity sang.

"What?"

"This way!" Rarity said before she grabbed Twilight's arm and pulled her away.

Before long, the two naughty girls were standing in the middle of a wide clearing, the only signs of civilization were in the distance along with the road. Twilight looked around confused, wondering why they were standing in the middle of nowhere, The paranoid part of her brain thought Rarity was gonna do something bad to her, hence why they were in a clearing with no one around.

"So… why are we here?" Sci-Twi inquired.

"Because I want to see you twerk darling and this is the perfect place to do it in." Rarity replied, smiling.

"Twerk?" Twilight echoed.

"I've heard it's a dance involving young girls gyrating their rear ends to people." Rarity explained.

"That's a dance?" Twilight remarked, baffled.

"Indeed it is." Rarity nodded.

"And… you want me to do it?" Twilight added, blushing.

"Come now, based on what we've done so far this is nothing." Rarity stated.

"Well… that is a good point." Sci-Twi admitted.

"Exactly! After we have big butts, shall we… move them?" Rarity grinned mischievously.

"Hmm… ok!" Twilight nodded.

"Excellent! Now… shake it!" Rarity declared.

Twilight took a deep breath and thought of a song, something fast paced and danceable. She closed her eyes and rocked her hips back and forth, slowly to begin with. After a few seconds, she threw her arms in the air and swung her hips with more force, cocking them on each side.
She walked backwards to Rarity and bumped her with her hip. Not one to be out done, Rarity quickly returned the bump.

"Ooh, yes! That's it! Shake what you've got darling!" Rarity cooed, getting her friend into the spirit of it, as well as letting herself go.

The fashionista swung her hips back and forth in an exaggerated manner, dancing alongside her normally reserved friend, who was now losing herself to this new dance.

"I think I understand now why so many girls love doing this so much!" Twilight giggled, getting into a half squat position, before pulsating her hips back and forth rapidly. Doing this caused her mini skirt to occasionally fly up and expose the rippling purple ass cheeks of her jiggling booty.

The sight of the nerd's jiggling buttocks was making it increasingly difficult for Rarity to contain her excitement. So she immediately turned her back to her twerking friend, and quickly fiddled with the zipper on the front of her shorts, giggling all the while.

After she pulled the zipper all the way down, she let her shorts and underwear drop to her ankles before stepping out of them. Rarity smirked as she squatted just a little bit, placing her hands on her knees, before gyrated her hips back and forth, making the flesh of her massive twin moons jiggle like crazy.

"Ooh, this is so much fun!" The fashionista squealed with delight, while she continued twerking along with her friend.

"I know!" Sci-Twi beamed. "We so got to get the others involved in this!"

"Agreed, but first…" Rarity began before she stood up straight and started to take off her shirt as well. "Time to make it more fun."

Next Chapter: Chapter 14 Estimated time remaining: 3 Hours, 49 Minutes