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Somebody who is a loner. One who is not too bright. One who stands out from the crowd and is noticeably picked on.

a.k.a "a loser"
You're kiat like Becky
Bruce is fuckin' kiat
by Lucio January 19, 2004
Some one who is a knob. Some one who is one fry short of a happy meal.
Andrew is Kiat
by Steven January 20, 2004