1 definition by Dr. Stofadopalous

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 to have a skin graft"

B: "Don't they usually take the skin from your arse?"

A: "what and have a bumfinger? ...

B: "BUUUUMFINGGEEEER"
by Dr. Stofadopalous April 14, 2011
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