mmgf Share definition Flag MMGF is an unknown disease usually caused by a lack of bitches, or trying to get back with your ex Will- “i’m suffering from mmgf, got diagnosed last night”Guy- “what the fuck is mmgf bro?!” mmgf by blakepreston08 May 21, 2023 0 0 Get merch Get the mmgf mug. Buy Now — $32.95 See more merch