1 definition by Exploding Faces
A dumbass is a person who always mooches off others. Typically of the hemp persuasion. Signs: Quite possibly into the Grateful Dead / likes to talk about conspiracy theories.
Person 1: Hey man, did you know if you light your cigarette backwards its 7 years bad mental health? Tobacco industries planned that filter to be hazardous to your mental health. Can I bum a smoke?
Person 2: WTF are you talking about? And no, you can't have any of my cigarettes, you bumbass.
Person 1: Oh dude, harsh. Chomsky was fucking right!
Person 2: WTF are you talking about? And no, you can't have any of my cigarettes, you bumbass.
Person 1: Oh dude, harsh. Chomsky was fucking right!
by Exploding Faces July 15, 2010