Shhhh!
Emailed to me by a friend (Thanks, Dawn)
On a visit to the library I happened to notice a man and a woman, both
deaf, signing with intense gestures, apparently in a heated debate.
The man said something; and the woman seemed upset. She started signing
her reply very fast, to the point where the man couldn't understand a
word; she also signed in big, wide gestures, which is the equivalent
of volume.
Finally, looking strained, her companion took her hands, "silencing" her.
Then he signed, very small and slowly: "You don't have to shout, I'm not
blind."