FMPA Share definition Flag abbreviation for "Found My Posterior Absent", which is the rated G version of the rated R abbrevition LMAO (Laughing My Ass Off) Wayne told Connie a joke, but forgot the punchline!! FMPA!!LMAO LMFAO FMPA by FineDetail August 25, 2011 0 0 Get merch Get the FMPA mug. Buy Now — $32.95 See more merch
