No Fucking Joke
Chester French are NFJ..
Have you heard the newest Chester French song? yes, it's NFJ!!
Not For Jews - An adjective, used to describe an event, activity or task deemed to be too physically demanding, dangerous, noisy, long or painful for your average, run-of-the-mill, non-sporty Jew.
Note: this is not an anti-semetic abbreviation, and is used mainly by Jews themselves.
Gillian: My boss is heading to Mongolia tomorrow to do a 12-day hike. He's going to be carrying a tent with him and enough supplies for the whole trip!
Marty: Oy, that's seriously NFJ.