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1.
The extended version of douche for those guys and girls who can't just be a douche. They're over ridiculous, a veteran idiot, make it not even your game anymore, are extremely lazy, think they're huge, love public humiliation and pick on smaller people for their sole entertainment.
"Jackie totally was making fun of Cindy's little brother, he thinks he's such a pro. That ass..."

"Yeah I noticed after he tried to pants me, big head and little arms that douchasaurus rex."
by Perplexcity September 05, 2008