A word whose origins come from the hit television sitcom "Seinfeld". One of the recurring characters, Cosmo Kramer, had been called this (as far as I know, on more than one occasion).

I assume it's supposed to be an insult, referring to the person as someone who thinks they're cool, yet is (according to the insulter) quite the opposite.
"Am I a hipster dufus, Jerry?"
by Asura October 26, 2004
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An extremely clumsy individual with a horse face, ridiculous high hair and tendancy to come up with alot of ridiculous ideas and schemes.
by Pratab March 30, 2008
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Someone who acts like they're into really "geeky" stuff because they think it's ironic that someone as "cool" as them would be not just a fan of it, but really into it.
At Wonder-Con, I bumped into this hipster dufus who was bragging about his band and how much he knows about the X-Men
by Nightwing83 July 11, 2008
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