1 definition by xray233

Top Definition
To bump into another man's testicles with one's own testicles, whether intentionally or not, when one is double-penetrating a woman with another man.
The idea of a threesome intrigues me, but the chance of knockin' nuts with another dude turns me off.
by xray233 August 10, 2007
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.