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defined as when someone is extremely confused, and for the sake of annoying others(or humoring them) pronounces "what?" in such a fashion. An old-man expression is required to get the full effect of the word.
Math teacher: x2+bx = (x+b/2)2-b4/4

Student(extremely confused): WHU?
by SUPERGOOSE13 November 27, 2010
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Also whufc, see west ham for a better definition and a bunch of arsenal supporters whining.
I'm forever blowing bubbles, pretty bubbles in the air.
by Kung-Fu Jesus May 03, 2004
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