Definitions by oh-li-vee-uh

classin 

the verb form of class; to have/exude class in an extreme way; similar to the class form of ho-ing

Girl 1: Dang, I only have short spandex to wear in gym class.
Girl 2: Don't worry girl, you be classin with those spandex.

classin by oh-li-vee-uh May 27, 2011