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Noun..one who is an idiot or moron that thinks they are smart or cool and is very stubborn and will not acknowledge that they are..
That person is such a yo-yak for thinking he can drive his 4 by 4 into a 6 foot snow drift only to go into a ditch.
by Gary Grigg January 08, 2005
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another name for some clown who decides to do something very stupid or ignorant, and there are witnesses to his/her stupidity
Look at that yoyak, he just tryed to drive his 4by4 through a snow bank and hit a car.
by Gary January 14, 2005
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