mfpa Share definition Flag Abbreviation for 'Mother Fucking Pimp Ass'. Used in specific to refer to a long-time player of ATS TrekMUSH. "Wow, mfpa is back! Surely we will become elite fighter pilots now!" mfpa by Demetrius Shade December 20, 2007 0 0 Get merch Get the mfpa mug. Buy Now — $32.95 See more merch
