Someone who constantly brakes things and acts like an idiot and never listens no matter how many times you tell them something. Usually thinking they are funny, dumbasses usually do incredibly stupid things. If you are doing things like tripping over curbs or driving 50 km down a road with your turn signal on you just might be a dumbass.
Wow look at that kid tripping over the curb what a dumbass!
by papaloki July 31, 2006
One who stays up until 2 a.m. drinking beer with his friends on a work night!
Often associated with deep and prophetic conversations on life and waking up with the taste of monkey caca in your mouth.
Sing. I am too old to behave like such a dumbass.
Pl. I can’t believe we can still act like such dumbasses.
by Trevor Clere September 21, 2005
1) a person that is unable to justify their actions, or lack there of, with a logical reason

2) a person that partakes in an activity that may be deemed as dumb by you or the general public

3) partaking in an activity to spite someone that will have a greater degree of negativity on the way others view you than it will on the person that you are trying to spite

4) a person that does not understand the words used in the previous definitions
You dumbass.

Don't act like such a dumbass.

(the word dumbass can, for the most part, replace any word that has a demeaning connotation)
by does it really matter?? September 30, 2004
When a people acts like a stupid ass and didn't even think of wtf there saying. Someone like Jacob.
"Hey Kristina," want to come to the library w/ me?" said Jacob.

"Sure," said Kristina.

Few Days Later.

"That was a great date," said Jacob.

by ladybooxfoo September 25, 2009
meaning a lot or too much or very.
My car speaker got dumbass slap .

(a lot of)

Those sneaker are dumbass clean .

by Jizzo Fortanel July 19, 2009
a donkey, or any other similar creature of unusually low intelligence
Guy: Come and buy this dumbass cheap
AnotherGuy: Damn that's a dumbass
by anotherguy November 11, 2003
A stupid ass bastard that think he owns the fucking world.
Look at that fat bastard run. what a dumbass cock smoker.
by farytale November 02, 2003

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