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Someone fond of showing others his bum crack, then rubbing sand in it.
Look at that hairy bumbak.
by Geoff April 17, 2004
A guy who is seen to get visibly upset if a member of the opposite sex is openly attracted to one of his friends. Also known as fucking cunt.
<a bumbak> so you like him?
<girl> yes
<a bumbak> Fuck you
by nikunjS April 12, 2004