J-card

A piece of paper inside the case of a cassette tape that tells you what's on it. So called because it looks like the letter J from the side.

Guy 1: Thanks for the mixtape, what did you put on it?
Guy 2: Look at the J-card, man.
Guy 1: Scatman John? Thanks bro!

by YourBatteryIsLow April 5, 2013

J Card

A figurative card given from a Jewish person to a non-Jewish person allowing them to make Holocaust jokes.

"Man he roasted you like your ancestors."
"You can't say that, you don't have a J Card."

by xSTRAY_SAVAGEx November 16, 2017