Polite way of using the other version of the word. Commonly used on a person that is a party-crasher or trying to act smart in front of others and/or fails at it.
Boy: why did the chicken crossed the road?
Girl: to end up in the other side of the street?
Boy: whoooaa we've got a smartbutt here!
Girl: to end up in the other side of the street?
Boy: whoooaa we've got a smartbutt here!
by LocoWiki November 17, 2014
Get the smartbuttmug.