Jack Share definition Flag a pussyhat boy, a poo smear of a son. Do not befriend a Jack. -The Paper Menagerie "Um - Your friend over there is giving me bad Jack vibes. I would unfriend him if I were you. He looks like he treats his momma like trash. Red Flag." Jack by PooPooPeePee2211 May 18, 2022 0 0 Get merch Get the Jack mug. Buy Now — $32.95 See more merch