Do you have a gesture or "tell" that tells people around you that you're angry (or getting angry)?

I didn't realize it, but according to my staff, if I tilt my head to one side and have a blank expression (instead of my usual smile), that is a signal that "it's time to leave because Saoirse may lose her s**t."

Do you have a gesture or "tell" that tells people around you that you're angry (or getting angry)?
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