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1.
an idiotic person, someone who does silly things
don't eat at MacDonalds, you bumfart!
by Avoura December 02, 2005

Words related to bumfart

bum fart silly ass idiot idiotic insane mental nasty stink stupid
 
2.
When someone fart's around you and it smells like a fart that a bum would do.
Damn, my bro had a nasty ass BUMFART and I almost fainted!
by Texas Turbo May 07, 2006