A word used to describe something that is both absurdly unbelievable (to the point where all you can say is 'ummm..?') and ridiculous.
"Dude, you should've seen the size of this girl! She was Gimondopotamus! It was fucking _umdiculous_"
"Righteous."
"Righteous."
by miguelito rojo November 6, 2005
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