butt in front Share definition Flag when someone is so fat that it looks like they have a butt in front, expically seen when they are wearing spandex. that guy is such a fat ass that he has a butt in front!! butt in front by not_a_dirty_pirate_hooker June 19, 2006 0 0 Get merch Get the butt in front mug. Buy Now — $32.95 See more merch