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one who has both lazy and retarded qualities.
Why don't you stop watching television and study alittle bit for once you bumbass.
bumbass by Brett Gasmony October 7, 2005
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!
bumbass by Exploding Faces July 15, 2010

bumbarassclot 

This word is used in a state of anger it means stank pussy and or ass it is usually used by Jamaican's
"Shut ya bumbarassclot don't mess wit mi ya no"
bumbarassclot by ghost12667 May 5, 2015
1: HAHA Look at the bumbass
2: WTF is a bumbass
1: Go to urbandictionary.com and go look it up
2: No tell me!
1: Stupid bumbass.
bumbass by Narhem May 6, 2010

bumbass theorem

When you make something that don't make sense.
4+3=8 bc if you break them apart then multiply them together you get 8 this is the bc the bumbass theorem makes you look smar

BUMBARASS 

Yo, Hows it going my bumbarass?
BUMBARASS by Spartan258 June 27, 2016