The strange, intense and pleasurable sensation a male gets in his penis while riding or driving in a car that suddenly crosses a dip in the road.

This effect appears to be amplified on vehicles such as school buses - especially when sitting in the back.
Son "what was that?!"
Dad "Son, that's what is called a joy dip"
by squart mudbottom April 10, 2010

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.

×