Top Definition
a synonym such as sike or the ninety's favorite, NOT; used at the end of a statement, question, sentence, etc. to negate what was just said; usually cuts of the person responding to the statement made.
frank: this food you cooked is excellent
amanda: really? thanks.
frank: fiyu
amanda: you suck.
by Amanda Rodriguez June 02, 2007
5 Words related to fiyu

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