1 definition by KChute

Top Definition
Someone driving at such a low rate of speed as to piss off the driver of the huge truck behind them. Usually used to verbally encourage said person to hurry the fuck up.
"Let's go there, fuck knuckle."
by KChute October 20, 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.