Top Definition
When you are boning a girl, and your sack slaps against your grundle (also taint, gooch, or chode).
Dude, I was boning this girl last night, and her brother was awakened by the sound of my grundle smack.
by matt steve josh May 05, 2006

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.

×