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An expression of that an idea or an action is stupid in your opinion. Originally comes from a person who had many bad ideas, and was named Jin. Can be used as a curse. (mark: preassure on JIN!)
Person 1: Lets eat kebab.
Person 2: Nei Jin!

eks 2.
Person 1: (Cant stop his clock from ringing.)
Person 2: Nei Jin!
by Gal_Anonym March 24, 2006
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