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A Duyuy is someone who is completely out-of-their-head stupid. Someone who completely misses the point of every conversation, lacks basic social graces and behaves impulsively. They do not seem capable of rational thinking, and laugh at really dumb shit (and then have to tell you about it). You'll know a Duyuy when you see one. You might even know a couple already.
Mike: "I can't believe he brought that chocolate bar in the bathroom. Now he's licking his fingers, and I just know he didn't wash his hands again. What a duyuy"
by Julle Naaiers March 02, 2017
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