People don't care about your cloak and dagger stories - don't you get it?
When I said it comes FROM SIGN LANGUAGE it does not mean it is for DEAF PEOPLE!
Let me introduce you to gestures...
When someone shows a crowd - this

what does it mean?
Or this?

what does it mean?
you don't need to be deaf to understand this means

All Mushrooms are edible! Some Mushroom are only edible ONCE!