To call someone or just someone that is fucking ugly. You take most of the word fucking off and just add f to ugly.
by sage thunder April 17, 2010
Get the fuglymug. Someone who is either fucking ugly or fat and ugly. Usually before another put down. Used in extreme cases of anger or ugliness.
by OhioStater July 20, 2008
Get the fuglymug. by *dave* July 18, 2008
Get the fuglymug. by jlee19 November 12, 2007
Get the fuglymug. by grant k December 15, 2008
Get the fuglymug. 
