Phrase meaning a large woman or man that is out of breath after only a few steps. Not attractive in the least this person resembles "Jabba the Hut" with legs.
Get a load of that Floor Squeakin' mouth breather going into Old Country Buffett, you can't wash all the parts of that gal.
If that Floor squeakin' mouth breather had a red shirt on he would look like an ugly Kool-Aid. O yea!!!
If that Floor squeakin' mouth breather had a red shirt on he would look like an ugly Kool-Aid. O yea!!!
by Buck Awesome August 27, 2009

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

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

One who doesn't know how to breathe through their damn nose, causing them to constantly pant like dogs.
by Asm0deus July 6, 2017

by DEMOGORGAN October 1, 2018

by spicy stinger November 19, 2017
