Top Definition
When someone always seems to have their mouth open. On going occurance can lead to lock jaw and the possibility off excessively large objects being swallowed.
john-paul: "hey dude whys that girl always got her mouth open?"
Patrice: "Ahh man shes got Al Bar mouth syndrome. she just can't close her mouth."
by loubear69 April 07, 2011

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.

×