Top Definition
a piece of cloth or paper that covers the midsection of a man to shield from seaman ejected during masturbation.
I arrived home early and caught my roommate watching porn with a Jack Bib made of newspaper spread across his belly.
by Super Stan Darsh March 18, 2011
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.