Top Definition
When you munch on someone's butt then eats someone else therefore being a cheater!
Girl 1: Why did you break up with him?

Girl 2:Well we did it and he was a buttmuncher, but then his "business trip" was to be a buttmunchereatercheater.

Girl 1: :0
by pissed off exgirlfriend May 22, 2011
Free Daily Email

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

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×