The main character in a song by the Beatles; a part of a medley of songs on the Abby Road album starting with Sun King.
Mean Mr Mustard, sleeps in the park, shaves in the dark, trying to save paper...
by lancelot323 June 15, 2007
1 more definition
fat mofo and the biggest shit-eater in the family with the exception of Big Fat Butch
shit lardass! You aint be nuttin but a fat fuck
by Butch's Bitch July 19, 2004