Finkbone Share definition Flag Someone or something that has been infected by a venereal disease, or the venereal disease itself. I hooked up with a girl last night and got a bad case of the finkbone. Finkbone by benfranklinsdirtyunderpants November 9, 2019 0 0 Get merch Get the Finkbone mug. Buy Now — $32.95 See more merch