mouth-breather

mouth breather

Someone who is dimwitted, foolish, or stupid; someone of low or stunted intelligence. Used as an insult. That bully is a such a mouth breather, I bet he has the IQ of a rock.
See also: breather, mouth
Farlex Dictionary of Idioms.

mouth-breather

n. a stupid-acting person. I always end up with a mouth-breather on a blind date.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • be out of (one's) league
  • be out of somebody's league
  • accompany (one) on a/(one's) journey
  • accompany on a journey
  • (one) puts (one's) pants on one leg at a time
  • a stranger to (someone or something)
  • be in bad with (someone)
  • be (not) a patch on
  • bargain
  • bargain for (someone or something) with (someone)
References in periodicals archive
It was a bit unusual not being able to use our noses to breathe instead relying completely on our mouths to inhale and exhale, especially since I have spent my entire life trying not to be a "mouth-breather."
Another posted: "Does this knuckle-dragging mouth-breather realise commercial planes have JET engines too.
Bits of silage would frequently make their way into my mouth (yes, I'm a mouth-breather).
Posterior tooth eruption and excess vertical alveolar development can occur if the mouth-breather allows the jaw to continuously hang open.
I hear all the time about lanyards getting lost or stolen, though it's tough to imagine what kind of mouth-breather could gain satisfaction from wearing bands off birds he didn't kill.
On the brink of 30, Lola thinks she has her life more or less figured out: She's nearly finished with her dissertation, cozily cohabiting with mouth-breather boyfriend Luke (Joel Kinnaman, cute but apathetic) and eager to start planning her wedding.
The patient was a persistent mouth-breather. He denied aural fullness and hearing loss.
No offence pal, but you look like the type of regularly befuddled mouth-breather for whom button flies on a pair of jeans would normally represent the very zenith of your capabilities.
But if you're skilled, that clicking lock-up of an SAA just adds one more bit of audible emphasis to the mouth-breather demanding your wallet.
If your girl is a mouth-breather, her mouth is likely to be dry, causing a build-up of bacteria that produces smelly sulphide gas.
Sure, a few mouth-breather white supremacist bozos from England came over and expressed their dubious support by standing outside Sinn Fein offices giving a double (double!!) thumbs down, but that can't really be helped, can it?.
No less ambiguous is the welcome extended by Teddy's brothers, dapper Soho pimp Lenny (Raul Esparza) and doltish mouth-breather Joey (Gareth Saxe), an aspiring boxer.
I was expecting the cliched trucker-capped mouth-breather, the paranoid white supremacist who hates foreigners and women.
And then have a wee word with the mouth-breather who is coming home every weekend with a hangover and laundry.
Ironic then, that thousands of neckbearded mouth-breathers took to social media to complain it was the worst thing since the last Star Wars film - which they also hated because the main character was female.