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To "Willy Mo" something means to look up/research a topic on Wikipedia to get facts to prove your point.
Person 1: "Do you know Kwang was actually played by Savio Vega?"
Person 2: "Really are you sure?"
Person 1: "I think so... lemme just go and "Willy Mo" it."
by The Real William Morgan May 11, 2008
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