Smart Ass Mother Fucker 

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"

Smart Ass Mother Fucker by Jesus37295 December 31, 2009

smart ass mother fucker 

Someone who is acting like a gay smartass.

Joe: It looks like he is saying kiss me kiss me.

Chris: Smart Ass mother fucker.

smart ass mother fucker by the cool Ratman April 10, 2007

fat motherfucker with the smartass mouth 

n. A fat little bitch that cockblocks you and your cousin from hooking up with two dime pieces.

Damn Jim, we would have hooked up with those dime piece hoes, if it wasn 't for that fat motherfucker with the smartass mouth.

fat motherfucker with the smartass mouth by FAT-COUSIN May 19, 2008