The Spy of the Tiger lookin' real sus over there by the vent.

"W-wait--" Twilight backed up until she was pressed against the electrical panel. "Fluttershy, you're... the imposter? How could you?"

Fluttershy licked her lips, raising her knife high in the air.

"I've always loved the taste of meat... I'm so sorry, Twilight."

She proceeded to cut her hamburger in half and give the other half to Twilight.