mouth breather

A stupid person who breathes through their mouth, like P Diddy.

P Diddy is a mouth breather

by ===0) December 29, 2004

mouth breather

A person of inferior intellect that lacks the faculties to recognize he is breathing heavily through his drooping open mouth; one who watches Fox News and Nascar with religious zeal.

Donnie shops at Evil-Mart like all the other mouth breathers.

by Joe Flood September 13, 2007

mouth breather

Someone who breaths out of there mouth because they have a deviated ceptum or there nose is messed up

Connor and Ben are mouth breathing lards and are huge mouth breathers

by Preme team November 7, 2017

mouth breather

A sun smilin' mouth-breather.

One who can't look towards the sun without squinting, showing their upper teeth and dropping their mouth open.
Usually wears a Cleveland Browns shirt.

"Hey look at that sun smilin' mouth breather, I sure hope a cloud blocks out that sun before he drools all over himself."

by F.R. January 7, 2005

mouth breather

A Conservative.

Those mouth breathers will believe anything Rush Limbaugh says.

by The Polish Parrothead August 12, 2009

Mouth breather

General term for a fucking idiot.

Usually seen with a blank stare on their face, mouth slightly agape, and possibly a little bit of drool coming out.

The new temp workers we got are a bunch of mouth breathers.

by Must Love Chest Hair December 19, 2017

mouth-breather

1. Someone who is incapable of breathing through their nose

2. Someone stupid who is unaware that their mouth is gaping open, often taking in gallons of air and spewing their own dry, bacteria rotten maw into your clean air in your vicinity.

Never let a mouth-breather speak to you very close, or you might regret it.

by Randall Wynn April 13, 2008