After seeing many HiE stories, I throught, a story about a planet Earth pony, (No conscious animal) winding in Equestria Obviously the joke would be about this pony randomly wandering, acting true to it's animal instincts, walking into Carousel boutique, staring blankly at rarity, silent, then it whines and starts pooping on the floor... Rarity gets grossed out...

Oh my, this is dynamite... gonna work on it...