buttsexer Share definition Flag your boss or someone of the like who is a person that cannot be respected and is mostly a loose, escort riding asshole. Wow, does that buttsexer think that we don't know, that he is looking at porn in there? buttsexer by Rbone March 4, 2005 0 0 Get merch Get the buttsexer mug. Buy Now — $32.95 See more merch