1 definition by Smileypaul

Top Definition
The sexual act of masturbating into your open hand which, when covered in spunk/juice, clench and use to fist your mother's brother (or anyone who likes it).

I didn't know my Uncle was such a deviant till he asked me to munclepunch him.
by Smileypaul May 15, 2008

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.