Theory in mathematical terms:
Name<= 4 letters = Mustache
Name>= 5 letters = No Mustache
Mustached Gentlemen: "Why yes, it is Al"
Stranger: "Mustache Theory!"
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from email@example.com. We'll never spam you.
Log in with Facebook to save your favorite definitions
and share them with friends.