Open mouth kissing is a simple kiss,
With or without the slight use of the tongue.
It is normally a short, meaningful kiss.
This kiss is simply a step ahead of the average Peck
And a step below a full blown Makeout Session
NOTE : An open mouth kiss is exactly what it says
A kiss on the lips, with mouths slightly opened
To decrease awkward lip tightness for a more relaxing,
Enjoyable kiss.
Open Mouth Kiss :
- Slightly opened lips

- Very little use of tongue, if any
- No longer than 5 seconds
by Crose22 December 2, 2009
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When somebody's jaw always seems to be hanging down, mouth is always involuntarily open, etc. Douchebags, dumbasses and hoodrats make up most of the infected population with Open Mouth Syndrome.
Pat- "That douchebag TJ never closes his mouth. Always looks like he's open for business and deepthroat sessions. Guess he's just retarded."

Jon- "Yeah dude that dumbfuck has Open Mouth Syndrome."
by PatNig February 26, 2011
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Open Mouth Breather - An individual that breathes through their mouth when not exerted. The individual appears to be, and ususally is, perpetually confused, not very bright, an idiot.
You see someone from Wisconsin driving along. As you pass them you see their profile and their mouth is wide open, an Open Mouth Breather. Although they are looking straight ahead, they don't see traffic stopping and slam their brakes on at the last moment. This is an example of an OMB (Open Mouth Breather)
by Nicholas Esayian October 17, 2007
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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 28, 2006
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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 Always Open Mouth is so different from the rest of Fear Before's albums, yet so amazing.
by Tim Nicodemo October 1, 2006
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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 28, 2006
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Sexual position in which the girl is getting penatrated doggy style, while the guy bends his index fingers into crooks and puts the fingers into her mouth, pulling backward (towards the vagina) on her lips as hard as he can.
"I was giving this sorority slut the open-mouthed bass last night and I blasted so hard I made her vag bleed."
by BradleyDC March 9, 2006
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