The reclassification of a human
finger/owner of the finger following
a skin graft
taken from the buttocks of the individual in question. Usually
but not exclusively as the result of an accident. To be uttered to the tune of "Goldfinger".
A: "Oh no, he cut off the tip of his finger, he might have
a skin graft"
B: "Don't they
usually take the skin from your arse?"
A: "what and have
a bumfinger? ...