Top Definition
When masturbating no longer yields any fluid. You have masturbated all that you can: you have reached your fapping capacity. Your fapacity.
I was at it all day, it took 6 tries before I reached my fapacity.
by Hermetic2 January 19, 2013

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.