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

Complete dumbass that finds it difficult to even breathe.

Matt Kulow

by fartknocker4 August 11, 2003

mouth breather

A Conservative.

Those mouth breathers will believe anything Rush Limbaugh says.

by The Polish Parrothead August 12, 2009

mouth-breather

Someone incapable of breathing out their nose because their mouth is always yapping. They can often be seen in forums where they're assumed to be clever. However, assumptions usually land you in jail.

Kia salespeople=everybody at Kia, involved with Kia or even knows about Kia is a mouth-breather.

by am_rockstar December 28, 2005

Open Mouth Breather

Open Mouth Breather - An individual that breathes through their mouth when not exerted. The individual appears to be, and ususally is, perpetually confused, not very bright, an idiot.

You see someone from Wisconsin driving along. As you pass them you see their profile and their mouth is wide open, an Open Mouth Breather. Although they are looking straight ahead, they don't see traffic stopping and slam their brakes on at the last moment. This is an example of an OMB (Open Mouth Breather)

by Nicholas Esayian November 2, 2007

Open-Mouth Breather

Someone who keeps their mouth open, often with tongue sticking out; appearing mentally deficient. Implying the person has brain damage or is mentally deficient.

All his friends were idiots and morons; the biggest collection of open-mouth breathers I've ever seen.

by Timbotron3000 May 30, 2006

Open-Mouthed Breather

Someone who keeps their mouth open, often with tongue sticking out; appearing mentally deficient. Implying the person has brain damage or is mentally deficient.

All his friends were idiots and morons; the biggest collection of open-mouthed breathers I've ever seen.

by Timbotron3000 May 30, 2006