LFGM Share definition Flag Shorthand for the 2019 NY Mutts rallying cry, "Let's Fuckin' Go Mets!!!" The Mets are looking for another comeback win & takin' the Wild Card to the NL Playoffs: LFGM!!! LFGM by Olivier Congress August 22, 2019 0 0 Get merch Get the LFGM mug. Buy Now — $32.95 See more merch