A person having similar defining characteristics of a stereotypical Jewish practitioner despite not participating in the religion.
i.e. having a combination of 2 or more of the following:
a big nose, Jew fro, being stingy, liking bagels.
Scott: Hey, who's that new guy eating the bagel with the Jew fro and big nose?
Mike: oh him? Ya, he looks like a Jew, but I hear he's Catholic.