Someone who no longer wears a mask indoors for large gatherings. These people are not anti-maskers/anti-vaxxers and used to wear their masks. Due to unclear expectations set by the CDC, state governments, businesses, and peers, they no longer wear their mask.
I was going to go to a wedding this weekend, but I'm sure there will be a lot of Mouth-breathers at the event.
by wells33abducted December 16, 2021
Get the Mouth-breathermug. You have a fat chick eat a ton of spicy food, and when she farts she does it through a connected funnel that goes to your mouth.
You inhale it all, nuff said.
You inhale it all, nuff said.
Gianna: I cant believe he let me do that to him!
Riah: Dont tell me he’s into feet or something…
Gianna: No, he’s got a fart fetish, so I turned him into my personal Propane Breather.
Riah: Dont tell me he’s into feet or something…
Gianna: No, he’s got a fart fetish, so I turned him into my personal Propane Breather.
by T.H.E. J July 23, 2025
Get the Propane Breathermug. A person who's so unbelievably dumb, they couldn't even be bothered to breathe through their nose. To put it simply, mouth breather is another word for an idiot.
by Suburbanz71 February 17, 2021
Get the Mouth breathermug. 
by ManaTheBox January 23, 2022
Get the breathermug. 
When you shit so large and long that your shit pokes out of the toilet bowl water, such that it looks like a snorkel. Credit to my girlfriend
by StatDoc October 14, 2025
Get the Breathermug.