You know what I find offensive? The term 'mouth breather.'
I'm a mouth breather.
Well, not during the day but certainly at night. I broke my nose when I was young and now can't seem to get enough air into the old lungs to fall asleep. So I have to breathe through my mouth. Also, ask any runner if they're a mouth breather when they're running and of course they'll say yes. You can't not be.
Yet 'mouth breather' is used pejoratively so many times. I think to conjure up an inbred hick or something. I'm not an inbred. I might be a hick but, is that so bad?
Stand up and be proud mouth breathers! You've nothing to lose but your smelly breath.