[IMPORTANT: THIS STORY IS NOW UNDER REWRITE UNTIL COMPLETION OF THE STORY... but who knows when that'll be]
A fourty year old human discovers ties to equestria when he gets hospitalized. contact is made to the queen of the changelings and travels to equestria.
(To avoid spoiling the first chapter, a lot of the description information has been dumbed down... A LOT)

(if you find any errors point them out to me and i'll fix them)

Meet Stanley Myers.

A fourty year old man who lives in a rundown apartment in upstate Washington. after getting his leg ran over by a car and is hospitalized, he turns on the tv and watches MLP friendship is magic. he finds it hard to believe that he could possibly enjoy the show but he gets hooked. that night in his dreams, he is contacted by his real mother and is given an opportunity to travel back to Equestria.

'back'? yeah, he lived in equestria for ten years. Due to an unknown source, the first ten years of his life were erased from his memory and replaced with new ones that aren't his.

To top all of that off, Stanley is bipedal.
A Bipedal changeling