Top Definition
Sub being short for subwoofers in the trunk. When someone pulls up beside your vehicle with their music blaring and you don't want to look weak so you turn yours up too.
Hey man, you hear that car? Sounds like a sub challenge to me.
by Sikes84 September 06, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.