A term you say when somebody does something REALLY stupid. not like forgeting their keys, like thinking Rhode Island is not a state. Made famous by comedian Carlos Mencia, you say it like imitating a retarded person.
Idiot: I did not know school started on time today
by Gray "the rod" Roberts September 2, 2005
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a term for a retard used by Carlos Mencia also can be used for someone acting retard, dumb, etc.
if he is dee and she dee the kid going to be dee dee dee
by RenegadeY2K5 September 13, 2005
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An idiot, usually more stupid than the usual idiot.
He thought a chicken's neck was a penis, he cut it off. What a Dee Dee Dee!
by Zach Ary August 28, 2005
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A person who is not born as mentally retarded, but who was born normal, and has become stupid.
by Dan Fonseca November 23, 2006
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Someone who is just plain stupid and makes a mentally ill person look smart..
Billy: Is 2+2 fish?

Joe: No its 4 you DEE DEE DEE!
by Dee Dee Dee Definition September 18, 2008
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A term used by comedian Carlos Mencia which describes someone so incredibly stupid that Carlos had to invent a catch phrase for them.
In 2005 Carlos Mencia made his first anual dee dee dee awards on his tv show Mind of Mencia.
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