F.a.S.b Share definition Flag Fetal Attack Squad Bitches Name given to the female members of the F.a.S jenna jo, kelci jo, sami jo, acst...j, rika suave, zena, heyn F.a.S.b by Urban Dictionary June 6, 2003 0 0 Get merch Get the F.a.S.b mug. Buy Now — $32.95 See more merch