FGNLT Share definition Flag FGNLT stands for Fat girls need loving too, used as an excuse to why you slept with a fattie last night "DUDE did you really go home with that girl last night?" "hey man FGNLT" FGNLT by Scobaru5 June 11, 2012 0 0 Get merch Get the FGNLT mug. Buy Now — $32.95 See more merch