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28.
Someone who somehow gets a lot of girls but is stupid as fuck. A dumbass is someone who usually plays hookie, skips school, doesn't pay attention in class. The funny thing about dumbasses is that they think there cool because every one is laughing, but the truth is every one is laughing AT them not with him.
Classmate: Wow Mike do you know anything?

Dumbass: *Laughs*

Classmate: Seriously...
by Sevenfold4life May 20, 2008
 
1.
Someone who looks up the word "dumbass" in a dictionary.
If you don't know what a dumbass is you're really a fucking dumbass.
by Assholes Inc. September 05, 2003
 
2.
dumbass - noun/adj.

1.) a stupid person
2.) a stupid descison
3.) george bush.
related to idiot
Tom, you're such a dumbass.

Tom, that was a dumbass descision.
by alex December 20, 2003
 
3.
A great word that is used by Red Foreman from the 70's show on FOX.
Red Foreman: Kitty that foriegn kid is a dumbass
by Endless Shadow December 20, 2003
 
4.
half the people writing these definitions
gellin means your not cool
by Seth July 08, 2003
 
5.
A person is both stupid (e.g. dumb) while also stubbornly refusing to stop being stupid when asked (e.g. ass)
I couldn't teach him how to use the paintball gun because he was running around with it between his legs like a dumbass.
by dumbass September 17, 2003
 
6.
see george w bush

A person who lacks intelligence
a moron, once again see george bush
by n333m November 12, 2004
 
7.
1. A person of ignorance or arrogance
2. The KKK
3. A person who thinks they know something and refuses to accept the truth of their knowledge
You are a fuckin dumbass!
by Legato Bluesummers November 04, 2003