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The excrement in which a monkey throws at the zoo keeper with anger and distaste for all things not right.
Jeff the zookeeper got a face full of dufer after he tried to molest the monkey.
by Bobbi Martin August 28, 2005
A Chick that isn't great, but will "dufer" now.
"Would you nail that chick?" "Yeah, she's kinda fat, but she's a dufer."
by KDANS August 15, 2006