Top Definition
Most Definetley: a saying that means most definetley. use when you are drunk,stoned or on the verge of pukeing.
Guy1:hey dude you wanna go party?
Guy2:Mo Deff man! Mo Deff!
by Garrett Silva May 05, 2005
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.