Top Definition
A vow taken by someone that they will not beat off (masturbate) until a goal that they have set for themselves has been achieved. It is a method of motivation, used mostly by athletes.
I'm taking an unbeatable vow until I beat Conner in a race.

I need an A this quarter, I'm taking an unbeatable vow until I do so!
by CHS XC September 29, 2010

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