P.A.C.ify Share definition Flag transitive verb: derived from the noun PAC or Performing Arts Center, denotes attendance or wish to attend the Sixth Form Club (PAC.) Lets P.A.C.ify tonight Grundy! P.A.C.ify by Dudders January 24, 2005 0 0 Get merch Get the P.A.C.ify mug. Buy Now — $32.95 See more merch