Prions!

Fluttershy went to the market. She needed carrots for Angel Bunny, and to go to the hospital for a checkup. She had been feeling strange lately. She had been chewing a scratching post, and nearly bit Angel Bunny earlier today.

“Hi, Fluttershy!”

“Oh, hi, Carrot Top.”

“How you feeling today?”

“Oh, not bad. But I’ve been feeling weird lately, like I -”

CHOMP

“Oh,” Fluttershy had bit the orange pony, right on the nose. It was lightning fast, and predatorily accurate. Fluttershy was flustered as the other pony recovered from the bite.

“Oh, I’m so sorry. I don’t know what came over me.”

“Oh, that’s fine. Goodbye, Fluttershy.”

“Goodbye, Fluttershy.” Fluttershy waved happily from her carrot stand. After all, Fluttershy always ran the carrot stand.

“Oh, hi, BonBon.”

“How’s the carrots?”

“They’re fine. D- do you mind coming here for a second?”

“Sure. Wh-”

CHOMP

Three Days Later.

Fluttershy and Fluttershy were going to go visit Fluttershy on her farm, where she lived with Fluttershy, Fluttershy, and Fluttershy. All the best apples in Equestria came from the Fluttershy’s farm.

“Hi, Fluttershy,”

“Oh, hi Fluttershy, Fluttershy. What brings you here?”

“Fluttershy was going to throw a party today. She invited you, if that’s alright.”

“Oh, I wouldn’t want to hurt my friend’s feelings like that. Tell Fluttershy I’ll be there.”

“That’s wonderful. I hear you started raising chickens.”

“Yes. They’re so cute.”

“Well, see you, Fluttershy.”

“Goodbye.”

And with that, Fluttershy went back to bucking apple trees, just in time for harvest sales.

Twilight was conducting an experiment. She had stayed inside for the past week, and she was almost done. Her experiment required total isolation, but she could still help ponies in  the library.

“All I need is more time... and no major interruptions. But the odds of something that could possibly be catastrophic enough to interrupt MY worth ethic was infinitesimally small. It would take a zombie pony invasion.”

She chuckled at her joke, and she sat down to wait.

Fluttershy needed the next Daring Doo book, so she went to go visit the Library.

“Hello.”

“Oh, hello Fluttershy. How are things?”

“They’re fine.” Fluttershy licked her lips, her eyes darting around the room. “I need Daring Doo number three please.”

“Here it is.” As Twilight came over with the book, Fluttershy lunged, using her wings for extra speed.

CHOMP

Fluttershy savored the flavor for a few seconds.

As Twilight stared in amazement, yellow fur spread from the bite on her flank like a disease, wings sprouting from her back, her horn retreating into her head. The pain was almost unbearable. And as the transformation finished, Fluttershy got up from the floor. Nothing out of the ordinary happened, after all. All Fluttershy did was check out a book.

“Goodbye, Fluttershy!”

“Goodbye, Fluttershy.”

And Fluttershy returned to her experiment, but with noticeably less gusto.

“Mwahahahahaha!” said Nightmare Moon as she scanned the faces of the yellow ponies before her. “Puny mortals! Prepare to suffer the wrath of Nightmare Moo-”

CHOMP

As the two Fluttershy’s fell to the floor, Fluttershy and Fluttershy ran up to catch them.

“Are you alright?”

“I’m fine.”

“I’m fine as well.”

“That’s good.”

All the ponies nodded in agreement.

“I’m glad you're okay,” said Fluttershy.

“Do you need anything?” asked Fluttershy.

“No.”

And Fluttershy went to canterlot to rule by Celestia. She had plans for that one.

“Teeheheheheeee!” Discord was giggling in delight. The chaos coming off of Nightmare Moon was enough to break him out of his statue. “Oh, how long I’ve waited for this day. Finally free! Now, time to swoop down on Ponyville and-” he stared at the scene before him.

“Okay, ponies. Who beat me here?”

“We’re here to stop you, Discord!”

“Oh, but it seems all I see are multiple copies of the Element of Kindness. So I suppose you can’t wi-”

CHOMP

Discord stared at the yellow fur, felt his bones melting, changing, and realized too late what force was at work here.

Fluttershy landed on the soft green grass, and went to go care for her animals.

Queen Chrysalis had had enough of this humiliation. It was time to get her revenge.

“Go, my changelings! To Canterlot!”

As the changelings poured in, they were confronted by the Guard, all wearing armor that covered their faces. Strange. The armor was all butter yellow, with lemonade pink highlights. But no matter.

“Attack!”

The changelings did what they do best: change. But all of them turned into Fluttershy.

Then the biting began.

Queen Chrysalis stared intently at the crowd. All the Fluttershy’s were simply standing there, socializing.

“Why aren’t you attacking, my changelings?”

No one answered.

“Okay. All my changelings go to the left, all the others, to the right.”

All the ponies went right.

“But where are my changelings? Where is my army?! Why do they not obey!?”

Princess Fluttershy came out to give an answer.

“Because, there are no changelings here. Only Fluttershy.”

CHOMP

As the holes filled in her legs, she stared intently with the last of her willpower, the last of her magic. She found small lumps in the ponies’ brains. Every one of them. This was no magic. This was, was...!

Prions!

And Fluttershy got up and went back to the forest. Her animals were waiting.

And this is the conclusion of this tale. As the entire world of Equestria  was turned into Fluttershy, the- wait. N-no. No! You stay away from m-

CHOMP

As the infection spreads from my leg, and I lose the ability to type from my hooves,I urge you to run anakjnnalsnfnjzxjhxchmxnmcnxzz...

Warning: this is an emergency situation. I am the backup narrator, and they are coming. Please, everyone run, hide, do something, before it’s too late. The Fluttershy’s are multiplying rapidly, and their bites are lightning fast and dead accurate. Do not approach them. They WILL bite and the effect is almost instantaneous. Scientists now believe that a prion of some kind is invading the bloodstream through the bite, releasing a protein that completely rearranges the DNA of their host. Please, everyone, be care-

CHOMP

A/N: LOL.  I had a weird dream. and this is what came out of it. Oh, my fucked up imagination...