Definitions by Mr. MoreAwesomeThanYou

U Not Funny 

To not be funny.

Guy 1: "Yo momma's so stupid, she sat on the TV and watched the couch."
Guy 2: "U not funny."
Guy 1: *Head explodes from the awesomness of the comeback.

U Not Funny by Mr. MoreAwesomeThanYou June 14, 2010