jac-fuck Share definition Flag The Jac-fuck is when you watch a porn movie on your own, then get interrupted by your girlfriend who wants to join in. I was watching Jenna Jameson when my girlfriend totally Jac-fucked me. jac-fuck by Jac-fuck November 22, 2013 0 0 Get merch Get the jac-fuck mug. Buy Now — $32.95 See more merch
