a person who acts like a morron and makes people laugh and does not realise that the people r laughing at them not with them
by roya January 27, 2004
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An offensive term used by kids and many young adults. People use it when they see someone mess up or when they do something stupid. I personally hate that word along with retard.
tim: Tony failed the math test.
bob: what a dumbass.
by kevin1009 July 27, 2007
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anyone who voted for obama because he is black
If you voted for obama just because he's black, you are such a damn dumbass that you need to go kill yourself
by homeschool1991 March 01, 2009
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A kid with a mullet or that are just so fucking stupid that they cant think for themselves and they give into the saying "do it it your cool"
Ryan your mullet was moving so much that you looked like a fucking dumbass
by Nick Mariano March 22, 2007
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The word that red forman invented from that 70's show when he was talking about a neighbor.
(Red): That (neighbor) is (dumb) and an (ass)... (He) is a (dumbass)
by 265354 October 29, 2010
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