Top definition
1. Someone who is really dumb
2. A person who doesn't/can't breathe through their nose
by A-Claire February 20, 2017
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Jul 25 Word of the Day
A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy
My bf and I used to really get it on together, but now it's just the occasional cumpadre wank
by Gladys Pipps-Knightley May 14, 2007
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2
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
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3
1. literally, someone who lacks enough intelligence that they never learned to breathe through their nose.

2. a really dumb person.
In his latest work, the director has forsaken the indie audience and made something for the mouthbreathers.
by hedgerow September 03, 2003
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5
A stupid person who breathes through their mouth, like P Diddy.
P Diddy is a mouth breather
by ===0) December 29, 2004
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6
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 06, 2008
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