sfbd Share definition Flag SFBD is an abbreviation of "Surfboard" which actually describes a woman with flat breast and butt. Man 1: Hey buddy I met a cute girl but she is a sfbd. Man 2: I am sorry for you man. sfbd by sphinx101 October 5, 2011 0 0 Get merch Get the sfbd mug. Buy Now — $32.95 See more merch
