When I woke up I didn't open my eyes. Damn... How much did I drink last night...? ...Wait... What was I doing? Vesper passed out, then, uh... Oh yeah, hospital stuff... Then I went to God-Horse... Then to Dicklord and he... Wait! I opened my eyes and sat up suddenly.

I was in my room in my bed. It was about midday. I climbed out of bed and stretched out. Everything seemed normal. Did it not work or something? Maybe it was all a dream, Luna's messed with my dreams before. Maybe... I went downstairs and OH IT WORKED.

A stallion version of Twilight was lying on the sofa reading a book. She He looked to me and a gained startled expression.

"Sky!" Twidong exclaimed. "You're awake!"

"Uh... Hey?" I replied.

"Why were you in Canterlot?"

"What?"

"Lord Solaris found you unconscious in the gardens near where Eris used to be about an hour ago." I stayed in the same place? Interesting. "And, uh... I don't know how to tell you this, but... You're..."

"I'm what?"

"You-You've... Turned into a stallion..."

"Actually, I'm-"

"What the buck?" Asked a female voice from across the room, cutting me off. I looked to see who it was and saw a mare that was obviously Sky standing near the front door. She looked pretty much just how I did, but female. "Why is there a stallion version of me there?"

"Hey," I greeted as I walked over to her, "I'm Cloud Calculation. I'm you from a parallel universe where everypony is the opposite gender. It's not exactly parallel, but they should be similar enough to avoid confusion."

"Oh. Okay then. Why are you here?"

"Our daughter from the future of this and my universe is being erased from time and space because she accidentally stopped us from banging and if we don't bang then both universes will be destroyed from paradoxes." The room was silent for a long time.

"What?"

"We need to bang."

"What?"

"As soon as possible."

"What?"

"We have a week at most."

"What?"

"Then it's death for everypony."

"What?"

"So... Wanna bang?"

"What?"

"I'm starting to see why Vesper knocked me out before."

"What?"

"Because I'm not sure what to do."

"You're from another universe?" Asked Twidong from behind me.

"Yeah."

"And everypony there is the opposite gender? So I'm a mare there?"

"Yeah, it's pretty weird seeing you as a stallion."

"Wow! This is amazing! What am I like?! What's my mare name?!"

"You're pretty much the same personality wise, and your name is Twilight Sparkle."

"Wow!"

"Your name isn't Twilight here?"

"No, my name's- Oh! I haven't introduced myself!" He hurried over to me and started shaking my hoof. "I'm Dusk Shine!"

"Cloud Calculation."

"Ooh! This is so fascinating!" He gasped. "I've got to write a letter to Lord Solaris about this right away!" He dashed off upstairs. I turned back to Sky.

"Feeling better yet?"

"What?" How am I supposed to snap her out of this? Well, there's that one thing I've dreamed about doing with another version of me for a while. The thing I forgot about when I tried the butt-stuff? Yeah. Well, why not? But if it doesn't work I'll look like an ass. I transmutated the sofa into a piano and started playing a simple tune.

"Just a small town mare," I sung, "livin' in a lonely world! She took the midnight train going anywhere!" Sky immediately broke out of her trance.

"Just a city colt," she sung, "born and raised in South Detrot! He took the midnight train going anywhere!" She transmutated a pile of books into a guitar and started playing along with me. Pinkie Dong appeared out of nowhere with a drum set and started playing along as well.

"A singer in a smokey room! The smell of wine and cheap perfume!"

"For a smile they can share the night, it goes on, and on, and on, and on!"

"Strangers! Waiting! Up and down the boulevard! Their shadows! Searching in the night! Streetlights! Ponies! Livin' just to find emotion! Hidin' somewhere in the night!" I quickly transmuted my piano into another guitar and we jammed for a moment.

"Workin' hard to get my fill! Everypony wants a thrill! Paying anything to roll the dice, just one more time!"

"Some will win! Some will loose! Some were born to sing the blues! Oh, the movie never ends! It goes on and on and on and on!"

"Strangers! Waiting! Up and down the boulevard! Their shadows! Searching in the night! Streetlights! Ponies! Livin' just to find emotion! Hidin'! Somewhere in the night!"

Sky broke out into an awesome guitar solo for a while.

"Don't stop! Believin'! Hold on to that feelin'! Streetlights! Ponies! Don't stop! Believin'! Hold on! Streetlights! Ponies! Don't stop! Believin'! Hold on to that feelin'! Streetlights Pon-"

"What the buck are you doing?" A voice loudly interrupted from behind us, startling all of us and making the song stop. No! So close! I turned to see who had interrupted. From the looks of them, it was Rainbow Dong.

"Dammit, Raindick!" Shouted Sky. "We were so bucking close!"

"Why is there two of y-" Sky picked him up with telekinesis and threw him out the door, slamming it afterwards.

"Bucking dickbag!"

Author's Notes:

A fun story arc begins!

R63 names used from here: http://mlpgenderswap.deviantart.com/

R63 names of OC's from this story (because why not?):

Cloud Calculation - Sky Calculator
Sight Watcher - Night Seeker
Rib Remover - Spine Stitcher
Butt Rubber - Ass Caresser
Bog Clogger/The Sandwich Terrorist - Sink Stuffer/The Taco Scoundrel
Munch Yum - Om Nom
Key Chain - Ball Chain
Louie - Louise
Lawn Order - Lawn Order (it doesn't change)
Back Scratcher - Nit Picker
Soap Sud - Soap Squeeze

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Now with 'animation'!

https://www.youtube.com/watch?v=6QM7CrAIvf4