Top definition
a shortened form of Man-bird-pig Flu which is slang for the swine flu or H1N1
person1: yo Maria just got back from Mexico yesterday. I think she may have MBPF

Person2: fuck I hit that last night....

person1: (puts mask on )teehee sux to be you
by TheWalkinDude-AKA-RF April 26, 2009
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