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1.
A Yaysian is a happy Asian, pretty much any Asian that is on any arcade in existence or just Dance Dance Revolution. Also when it is Chinese New Year even though they're Japaneseand so forth.
Henry: "I went to the arcade yesterday to see the new DDR game and I swear I've never seen so many Yaysians.
by Holden Morrisey Caulfield May 14, 2007