- Chew their gum with their mouths open like a cow
- Chew with their mouths open in general
- Breathe loudly through their mouths
- Chew with their mouths open while breathing loudly through their mouths
Bother the living bejesus out of me. To no end. It makes me want to punch you in the throat. Hard. Repeatedly.
Until you stop breathing.
Number 1 pet peeve for me.