What is Open-mouth Breather?
1.
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.
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When you're neighbors are playing kick ball in the street and yelling obsenities at 3 in the morning and you're sober and have..
