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."
Patrice: "Ahh man shes got Al Bar mouth syndrome. she just can't close her mouth."
by loubear69 April 7, 2011