Similar to its bon fire counterpart, a bum fire involves a pollutant-ridden fire cast in an open steel barrel trash can (make up of trash container is flexible), that a multitude of of skeezy homeless personnel can find warmth, scavenging light, or a cooking surface to decoct the day's loot over. Also known as a hobo heater
by bman981 February 7, 2010
Get the Bum firemug. The flame cum fire bum is when you drizzle gasoline in and around the anus of your partner and then light a match and put it into your urethra and proceed to butt fuck your partner.
by Ligma69_420 January 3, 2021
Get the Flame cum fire bummug.