Top Definition
the 5th wheel is the spare wheel attatched to the back of a slab. the 5th completes the slab. without it you are not ridin slab. it can often be seen in a tilted or "reclined" position.
by King_Grande July 03, 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.