Mouthsweat 

The moisture around one's face after performing oral sex.

Also; the distinct smell left in a room after oral sex.

After Jenny went down on Chris for 20 minutes she was in desperate need of a towel to wipe off her mouthsweat.

Mouthsweat by Bortnias August 22, 2021

Mouthsquatch 

A fat, uneducated and hairy humanoid that talks excessively yet still says nothing of substance. Closely related to bigfoot and the abominable snowman.

That odd hairy guy wont stop talking, what a total mouthsquatch!

Mouthsquatch by cutiegirlygirl April 9, 2019

mouthwestern

The idea at southwestern university that everything you think, say and do will be known by your next door neighbor in less than 10 seconds, by your friends living in another residence hall in less than 10 minutes, and by random people passing the Academic Mall at night in less than 10 hours.

don't worry man, this is Mouthwestern University... your secret is safe with everyone!

mouthwestern by Matt T. Hammond May 20, 2007

Mouthbreather 

1. Someone who is really dumb
2. A person who doesn't/can't breathe through their nose

(The word mouthbreather is also used in Stranger Things)

Mouthbreather by A-Claire February 20, 2017

mouthbreather 

1. literally, someone who lacks enough intelligence that they never learned to breathe through their nose.

2. a really dumb person.

In his latest work, the director has forsaken the indie audience and made something for the mouthbreathers.

mouthbreather by hedgerow September 3, 2003

Dutch Mouthbreather 

When someone uses their mouth to inhale gaseous fecal particulate from partners chocolate starfish.

Remi is truly a Dutch Mouthbreather sommelier - he picked up hints of white truffle and corn from my fart.

Dutch Mouthbreather by Buford C Cabhash April 22, 2022

Moutheater

A term used in the realm of Industrial music to define a deceiver. One who is an expert of manipulation who uses others to control and get what he/she desires. The term "Mouth" refers to the ability to speak and offer opinion and demonstrate free well while "Eater" is the consumption of this freedom, or the taking away a person's individuality. The song "Moutheater" by the American Coldwave Industrial band 16 Volt, is this word's claim to fame in the realm of Industrial enthusiasts.

"Erika told me she would be there for me, she left me with nothing and betrayed me. She was a Moutheater and I couldn't even see it

Moutheater by King Herne April 2, 2013