Definitions by EmmAndCee

Smac 

Super-Mega-Awsome-Cool

Used as a name, or an adjective.

Can also be an insult

i.e -
Super-Majourly-Ass-Creepy

Good version ~
Girl 1: Wow, that car was so smac .
Girl 2: Agreed, total smac back .

Or bad version ~
Girl 1: Omg, she is so smac .
Girl 2: I know aye ! Stalker much?

Smac by EmmAndCee March 15, 2010