Fimble-Famble Share definition Flag (Historical Slang) A lame or sorry excuse for something. Tom gave a fimble-famble as a reason for not finishing his homework; he attempted to say that it was eaten by a flying rat. Fimble-Famble by Flaminghorse April 10, 2018 0 0 Get merch Get the Fimble-Famble mug. Buy Now — $32.95 See more merch