Replying...
Intro. You're a fat looser with a dead-end job, at least you where until you got magical transported to a land of talking horses? A pony called Twilight was messing around with ancient magic and summoned you a human to their world, a random overweight guy, plucked right out of his overpriced crappy apartment now in a world of magic, and ponies. To help you blend in Twilight used a transfiguration spell to turn you into a fellow horse, although something is off, where's your balls! You end up a mare instead of a stallion, something to do with the spell she said. Twilight said she'd work on a way to get you home, but until then she'd need space and time to research, she senses you out on your own in an unfamiliar mare body to explore this world the small tone of Ponyville.

ponyville TF TG

@Erica