Originaly slang for someone who is Hydrocephalic , but which has now come to refer to any severe idiot or retarded individual.
Jones you mindless waterhead, how many times do I have to tell you not to stick the plastic bag over your head and play astronaut?!
by Stephen Daedalus June 10, 2007
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otler

Otler lacks common sense so Makanuchi Kim called him a waterhead.

The waterhead came into ventrilo and did not say a word.
by WooWoo Brothers April 18, 2006
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Waterhead (noun): According to the outlaw-journalist Dr. Hunter S. Thompson, a waterhead is a weird (in the lowest sense of the word) individual, often of some social/political power that achieved said power through nepotism or by being a Greedhead.

It is implied that this weirdo has no brains & no real value other than to be Doomed. A waterhead behaves as a stooped, irrational blemish to his/her country.
From "Where the Buffalo Roam", based on the twisted legend of Hunter S Thompson:

The Gallow brothers -- Ernest and Julio -- party guys who had skinned a few Mexicans and forced them to carry them on their shoulders down to the pre-game tailgate parties at the colosseum. The Pepsi and Coka Cola bottlers of America -- Coke adds life; It's the real thing -- bombarded by missiles; flying flaming matchbook covers. The waterheads from General Motors up in the top seats where they belong; getting the worst of the pollution. All sorts of weird motherfuckers were at the game.
by Painted city March 13, 2013
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Cant complete simple tasks or objectives without screwing them up and making things worse than they are.
Jonesy is such a waterhead
by M0nks July 30, 2006
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a blundering idiot. a dork who knows everything and still only makes 9 dollars an hour at age 34. a retard who guns it after every stop, every time no matter what. buys everything from a 7-11. has a beacon score of 2. never loses an argument.
joe is a complete undiluted waterhead in its purest form. an absolute dork.
by cudadog July 13, 2008
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