A Dumb-billy is a Chicago slang about a person who is more dumb than a hilly-billy.
"Freak you Dumb-billy". "You're such a Dumb-billy".
by bumbillysnitches November 29, 2012
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from firstname.lastname@example.org. We'll never spam you.×