GFYSISB Share definition Flag Abbreviation of 'Good For You So It Should Be.' Increasingly typed by rahs and the upper class Rah: "Sheridan, is it true your son is single-handedly circumnavigating the globe?"Sheridan: "Yes."Rah: "GFYSISB." GFYSISB by .999Sterling May 15, 2012 0 0 Get merch Get the GFYSISB mug. Buy Now — $32.95 See more merch
