jack-n-it-off Share definition Flag slang for jack in the boxes (in California). coined by some ballers one day after school. MAN i'm soooo hungry!. I THINK IMA GO MOBB TO JACK-N-IT-OFF. jack-n-it-off by chicken-face November 24, 2007 0 0 Get merch Get the jack-n-it-off mug. Buy Now — $32.95 See more merch
