man, that tail really would get in the way.....that thing's gonna be tickling your ballsack like no other....and i dont like being tickled on my ballsack...i've never been tickled on my ballsack...and i dont intend on being so either....when she orgasms, those front hooves are comin for your face....
so in essence, you asked if i'd mount a horse that had big breasts....fuck no...