Very similar to Bad Ass Mother Fucker only instead of being a Bad Ass your a Smart Ass (and not a bad kind of smart ass).
guy 1 "John can do particle nuclear physics in his head while high!"
guy 2 " Yeah John is one Smart Ass Mother Fucker"
guy 2 " Yeah John is one Smart Ass Mother Fucker"
by Jesus37295 December 31, 2009
by the cool Ratman April 10, 2007