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1.
Abbreviated and remixed from 1990's phrase "Who da man?.. You da man!" This phrased is used to congratulate a person on any kind of achievement that he has just finished telling you about.
"Bro last night I finally got to sleep with my girlfriend!"

"Whoda-Youda bro... Whoda... Youda."
by SaidInJest October 14, 2008