//------------------------------//
// Prompt #332-Half a Mare, Half a Stallion 
// Story: Ponywatching 
// by ThunderTempest 
//------------------------------//

Pinkie Pie dashed down the street at a breakneck pace, heading directly for the Golden Oak library. This was an emergency!

“Hi Rose! Bye Rose!” However, even in an emergency like this, Pinkie couldn’t simply not say hi to everypony he passed. Eventually, the party pony reached the library, and began to pound on the door as fast as he could manage.

“Twilight, open up, quick! I need your help!” 

All of a sudden, the door pulled back from under his hoof, and Twilight stood there frowning. Her expression shifted from disapproval to confusion once she’d taken in the scene before her. This was a pony with the right physical aspects of Pinkie Pie, but with one important difference: This pony was male.

“And who are you?” Twilight asked. Pinkie Pie opened his mouth, then closed it, looked down at himself, and gave a sheepish grin.

“I’m Pinkie Pie. If you let me in, Twilight, I’ll explain how this happened, but please just let me in! It’s an emergency!”

Twilight sighed, and fully opened the door to let the pink stallion inside.

“Can I use your shower?” asked Pinkie, as he dashed inside.

“What?”

“I need your shower. Or a bath. Or even just some hot water. We’re all out over at Sugarcube Corner.”

Twilight rubbed a hoof over her nose. “Shower’s through there, Pinkie,” motioned Twilight. A second later, the alicorn was bowled over by the pink stallion rushing past. After a few moments, she heard the sound of running water, and then a few short moments after that, it stopped, and Pinkie Pie emerged from the doorway.

“Oh, that feels much better. Thanks, Twilight!” exclaimed Pinkie, now back to her usual appearance.

“Huh? Wha-?”

“Oh, right,” said Pinkie, looking at the very confused alicorn, “I promised I’d explain this, didn’t I? Okie dokie lokie!”

“But...You...That’s not scientifically possible! You can’t be a stallion one minute, and a mare the next! Which one are you?”

Pinkie sighed. “Twilight, just let me explain. When I left the rock farm after I got my cutie mark, I found these neat set of springs of water. There were lots of warning signs and stuff, and I fell into one of the pools. Now, whenever I get cold water on me, I turn into a stallion, and hot water turns me back into a mare. But I think Mr. Cake took a really long shower this morning, and used up all the hot water, so when I took my turn, I changed.”

“Jibbawha-?”

“The reason that it’s an emergency is that I’m meeting my sisters at the train station later, and they don’t know about this little problem of mine. So I have to be a mare.”

~~~time~~~

“But...Mare...Stallion...Pinkie,” stammered Twilight, still having trouble getting her horn around the concept that one of her closest friends could become a stallion almost at will, “You know what? Fine. You fell into a magical pool of water that affected you for the rest of your life, and caused you to become a stallion whenever cold water touches you, and only hot water changes you back.”

Pinkie giggled, “Oh, The pools weren’t magical-they were cursed. Later, Twilight! Thanks for letting me use your shower!” Pinkie Pie bounced out the door, off to meet her sisters.

Back in the library, Twilight’s eye twitched.