to be a smartass. to say something to someone that would come across as you looking like a smartass. another term is sasspot.
dad: son come get some dinner
son: why dont you bring it up to me!
dad: *mumbles* wow your being so smartassish
6👍 5👎
being a pain in the ass by behaving as if you know everything and/or being sarcastic
Kid behind the camera: *makes a joke*
Tourettes Guy father: Well quit acting all smartassish!
smartass Tourettes Guy