(noun) a goofy man (not nessicarily named Billy) who acts gay ormetrosexual. Sometimes said as an insult but usually just as teasing.
by Santas Sexy Helper July 30, 2004
Get the Silly Billy With No Willymug. by EndMySuffering-1 January 11, 2018
Get the silly billy willymug.
Get the silly-billy-nillymug. Seriously the maddest insult one can unleash on another, commonly used among children of two years of age.
by fr1ck May 8, 2018
Get the Silly billy poo headmug. Two crazy assed weirdos who just love it! Its a word to describe to best mates who ove to have fun :D
by Robyn-ashley mayte March 11, 2008
Get the Silly and Billymug. by Bobmski23 October 20, 2009
Get the silly bo billymug. 