vacu-jack Share definition Flag Device used to create an erection (before Viagra), increase penile size, or simply get off. Consists of an airtight cylinder and a hand pump. Girlfriend dumped me, so it's back to the vacu-jack. vacu-jack by Jabba17 August 24, 2006 0 0 Get merch Get the vacu-jack mug. Buy Now — $32.95 See more merch
