Top Definition
The rash you get on the tip of your penis from over fapping without lubricant. The skin becomes ultra sensitive in a bad way.
I cant walk to the store because every step I take causes my pants to rub on my fap rash and it hurts.
by seamoanz September 28, 2009

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.