Junk Slap Share definition Flag Male sex organ known as penis is used as a tool for slapping any given person across (his/her) face. refer;<pimp slap, bitch slap> I junk slapped <person's name> across (his/her) face. I junk slapped Jessica across her face. Junk Slap by D$A$V$E May 25, 2006 0 0 Get merch Get the Junk Slap mug. Buy Now — $32.95 See more merch