According to several Korean business men, a 'Jack Jew' is someone who is a wall street mother fucker, the type of Jew who, unlike his Orthodox brothers (i.e. Matisyahu), do not take their faith seriously. Instead they are fake money grubbing whores.
Korean business man says in think Korean accented English to his friend: "Why you be jack jew with me?! You inflate stock price for going public, make lots of money and fuck me? You jack jew."
by Jew Spank February 25, 2011

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