Someone who wears mma fight gear out of the house and has never been in the cage.
A frat boy wearing a TapOut hat out to the local bar is a doucheosaurus.
by jiujitsu February 09, 2010
A person who is acting more than a douche; when the word "douche" is not enough to describe a persons dumb decisions, actions, believes, or thoughts. This term could also be used to a person who is larger than others.
"Hey look, I can dead lift 515 pounds!" Mike exclaimed. "Wow, he is such a doucheosaurus." Peter stated aloud.
by Saltywheels April 01, 2009

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