AKA retarded. Sometimes when you're hanging out with your friends this kind of behavior is acceptable; however, in the general public you should definitely limit your dumbassness. Acting loud, stupid; making poor decisions regarding life. See also teenage boy.
Sitting alone in his room at night, with no one else to even talk to, Steven finally realized something: he was a dumbass.
by dreadreaDREA! (LOL FAIL) March 18, 2009
something that starts with a d and ends with a bass.. theres a little ummm in the middle.. thus D-UMM-BASS..
err this is such a dumbassedly dumbassed definition... alliteration is the name of the game...
by queen of the GRasslands August 29, 2006
A guy I know named Aaron who is an idiot and basically a complete screw off until the last minute and even then.....
Aaron: Hey dude how do you convert a decimal into a percent???
Some Random Person: Jeez your suck a dumbass.
by Game Crazy February 02, 2006
someone who can't think for themsleves and follows what others tell them to do especially fake bestfriends orders
hey man do this with me, and we're gonna do this later....

ive never done that before and im kinda against it but ok!
by nfg May 10, 2005
The man who lost the popular and electoral vote.

See John Kerry
Looks like that dumbass didn't win enough votes. I guess I'll move to Canada.
by John Cusack November 20, 2004
One who doesnt under stand the word crookshank
He asked me what the word crookshank means so he is a dumbass
by largelen November 06, 2009
an extreme of something, can be used as an adjective.
That fool is dumbass high

There were dumbass RDB' s at that party last night.
by george tedbetter July 23, 2006

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