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1.
A part of the body called Asshole.
You are a mufsa.
by Sambool December 03, 2003
 
2.
In adressing of authority in a non-formal playful yet kinda way, meant towards one who is a jokerster but not a trouble maker; a funny and kind person
LOL mufsa! ur such a dumbass!
by water_floats November 05, 2009