One who drinks, or extracts the alcohol from Listerine in order to get drunk. Usually people who have no money, or way of getting anything better. Hence the name bum.
Keith: Hey you want to Listo Bum it up tonight man?
Jon: Lets see... I dont have any money, and I've been sleeping on the streets for days now... why not.
Jon: Lets see... I dont have any money, and I've been sleeping on the streets for days now... why not.
by Jon Bray September 30, 2006