I think they need to chew with their mouthes closed.

Cause they're rude

I legit have eating anxiety 🤣 I refuse to eat near people even though I chew with my mouth closed

It's worse when you are sitting in your car with someone and stuck hearing it. The radio is a life saver

Mo manners

I know it someone’s pet peeve lol 😂 I do it for annoying people reasons

I always wonder this 😭

Probably stress..... or theyre talking

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by the way, Have you heard of tongue resting posture?
you pretty much are supposed to rest the entire tongue against the palate, in order to breathe properly. (teeth not clenched , unless eating) Your tongue should also not touch your front teeth.

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Improper Tongue placement, or 'Tongue Thrust' is the number one reason that skulls get deformed. This causes dental misalignment, ultimately resulting in braces.

Cos they weren't taught manners

why ppl listen so damn hard when others eat 🤣🤣