This style of mask-wearing seems especially popular among young men. I have to assume one of two things when I see you doing this: You don't know that you breathe through your nose too. You think that the only point of wearing a mask is to keep authorities from yelling at you. So, for your information (because you apparently don't know): The purpose of a face mask is not to hide your teeth. We wear masks to prevent the spread of airborne virus. And if you protest that you are a mouth-breather, I present this Google definition: Mouth-breather: a stupid person
Informal stuff for my English 100 courses at Ashland University.