Top definition
A smoker who never buys their own cigarettes. They support their habit by constantly bumming smokes from their friends with the promise of returning the favor (Which will never happen).
Friend 1 : Hey man can i bum a smoke? I'll hit you up later.
Friend 2 : Man, the fuck you will, everyone knows your an infinibum!
by Zichlone April 03, 2010
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