When people chew loudly

Yup, it's called respect for manners and closing your goddamned mouth when you chew.

Actually, it's called mysophonia. It's when you have an irrational negative reaction to certain repeating sounds. And it's not because people chew with their mouths open; it can be any repetitive sound like pencil tapping or even breathing.

Thank you for your compliance.

Depends on the situation. If you were watching an insane spoof or comedy, it's okay. But if you were watching a tightrope suspense thriller, that would merit a soccer ball to the face!