30 Pack Jack Share definition Flag A nickname used for a fag who thinks he can handle more alchohal than he actually can. Mostly used for a guy named Jack. "Jack you wanna split a 30 pack?" "is that gonna be enough?" "OH 30 PACK JACK!" 30 Pack Jack by Nick Lyons November 6, 2007 0 0 Get merch Get the 30 Pack Jack mug. Buy Now — $32.95 See more merch