fmiP Share definition Flag similar to fml, but short for "fuck my iPhone."can be used in any negative occurence with an iPhone. "everytime i spell 'yayy,' spell check changes it to 'tatty!' fmiP." fmiP by elrissaaa March 14, 2010 0 0 Get merch Get the fmiP mug. Buy Now — $32.95 See more merch