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Means that something is very legitimate such that it would meet the high standards of a very religious Jewish person (Zimmerman, being a common Jewish name).

Synonym for legit. Can be used as a question as to somethings legitimacy. Kosher is used not necessarily in religious sense.

Shorthand is "K4Z"
Foolz on shabbat…Kosher for Zimmermans?”

Male University Student 1: “Should I foolz with my 2nd cousin?”
Male University Student 2:”Dude…so no K4Z”

Fraternity Student 1: “What do you think of that bitty?”
Fraternity Student 2: “Very Kosher for Zimmermans”
by AEPI Jedi April 29, 2010
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