Top Definition
A group of four highly trained athletes, rumoured to be ex-special forces, that compete in extreme adventure races whilst praising the virtues of regular masterbation
"You have a date last night?" "No, I was a masterbeater"

" Man! You gotta train good to beat those masterbeaters!"
by Da Running man October 29, 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.

×