FFF rule Share definition Flag If it flies, floats or fucks, don't buy it. Rent it. That's the FFF Rule. "Dude, never buy a boat. If it flies, floats or fucks, rent it. That's the FFF Rule." - Anonymous FFF rule by idyt December 5, 2016 0 0 Get merch Get the FFF rule mug. Buy Now — $32.95 See more merch