A person who breathes through their mouth, thus having their mouth hang open. Their mouth can be anywhere from barely open, to gaping, and usually the more open it is, the more idiotic, and unintelligent they look. Mouth Breathers may or may not be intelligent, however, due to the fact that they don't realize their mouth is gaping, they just look like a moron, who may drool at any moment, but is deffinately sucking in as much air as possible.
Mouth breathers tend to be people who are bored, zoning out, very focused on something, someone with huge lips, or someone who isn't smart enough to realize their mouth is hanging open, catching flys. All tend to appear as the latter.
People who are sick and can't actually breathe through their noses do not count.
Katie: "I was sitting in class, and I looked over at Fred, who was staring dead eyed at the board with his mouth hanging open, like an idiot"
Rachel: "Ew, what a Mouth Breather"
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The act of going to cancun and coming back with an illness in your mouth that doctors can only describe as "funky"
Closely related to herpes on the inside
Kelly please stop getting drunk and spreading your mexi mouth you already gave it to Beth.
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a chick that gobbles up cock like she needs it
dude my girlfriend is a total meat mouth
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A person who uses foul language is said to have a Trucker Mouth or The mouth of a trucker.
There's also a rock band called Trucker Mouth.
I've got a trucker mouth and need to control my F-bombs better.
45๐ 16๐
performing oral sex on a penis.
My girl gives me great MOUTH HUGS!
31๐ 10๐
Public information exchange conducted verbally (by the mouth) in less than 140 characters and complete with web-based acronyms and abbreviations like WTF and Np (No Problem). Once refereed to as "chatting" before the craze over the mouth tweeting platform went viral in early 2011.
Chit-chat 2.0
Jenny: I guess everyone is meeting up at Henry's later. Billy mouth tweeted "Bee Tee Double U - HH @ Henrys"
Ian: Oh cool, thx for the RMT (re-mouth tweet)
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Smoker poser who mouths(doesn't inhale) his fags(brit for smokes).
- Jack is a mouth faggin butt pirate!
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