Someone who keeps their mouth open, often with tongue sticking out; appearing mentally deficient. Implying the person has brain damage or is mentally deficient.
All his friends were idiots and morons; the biggest collection of open-mouth breathers I've ever seen.
by Timbotron3000 May 30, 2006

The Always Open Mouth is the third album by the Colorado band Fear Before the March of Flames. It was released on Tuesday, September 19th, 2006.
The album marks a very different sound for Fear Before the March of Flames: whereas their previous two albums concentrated much more on raw, powerful Hardcore music, this album contains a much more experimental side, such as more emphasis on antiphony between the lead singer and guitarist; a considerable lesser amount of screaming; layered guitar chords (a second guitarist was added to the band before the recording of this album); and many electronic sounds used with heavily-distorted or otherwise-effected guitars and synthesizers, or sequencers and drum machines, giving it a more Industrial feel. As a result, it is not as hard or fast as their previous two albums, but instead, is more experimental and well-crafted.
The album marks a very different sound for Fear Before the March of Flames: whereas their previous two albums concentrated much more on raw, powerful Hardcore music, this album contains a much more experimental side, such as more emphasis on antiphony between the lead singer and guitarist; a considerable lesser amount of screaming; layered guitar chords (a second guitarist was added to the band before the recording of this album); and many electronic sounds used with heavily-distorted or otherwise-effected guitars and synthesizers, or sequencers and drum machines, giving it a more Industrial feel. As a result, it is not as hard or fast as their previous two albums, but instead, is more experimental and well-crafted.
by Tim Nicodemo October 1, 2006

When a women leaves her used Maxi pad on top of a trash can (usually in a bathroom) for everyone to see.
Clem saw an open faced sandwich in Cecile's bathroom trash can today, vomiting ensued quickly thereafter.
by Klitz April 19, 2008

Someone who keeps their mouth open, often with tongue sticking out; appearing mentally deficient. Implying the person has brain damage or is mentally deficient.
All his friends were idiots and morons; the biggest collection of open-mouthed breathers I've ever seen.
by Timbotron3000 May 30, 2006

by oh ok weirdo October 30, 2018

When people online are being creepy, the people will comment/reply and say “FBI open up!” showing that if they used that behavior IRL they would probably get arrested.
by Tom Holland’s Girlfriend January 28, 2019

A descriptive for a terrible smell. Often "wide open ass" is used to describe a geographical place. Less often it is used to describe the stench of a person.
1. Commerce City, Colorado smells like wide open ass.
2. That guy really needs to clean himself up. He reeks like wide open ass!
2. That guy really needs to clean himself up. He reeks like wide open ass!
by Rook's Buddy May 10, 2010
