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2.
A hopelessly incompetent idiot, often in the world of work and business.

Usage@ Common in the UK
I can't believe that bumclown can't operate the photocopier!
by ExoticBehemoth July 06, 2011
 
1.
a homosexual that doesent realise no one wants his bum
look at mr.faggot, he doesent have a clue, that every one in the room is straight.what a bum clown .
by mr lee in cardiff January 08, 2009