Sad Face is Sad (Part 2/?)

Once Upon a Time,
There was a mask.  It was a very sad mask, but every being who saw it could not help but smile, or even laugh.  The mask’s appearance was so chipper and droll that no one guessed how sad and unhappy it was, so the mask became angry.
No one noticed, for the mask looked exactly as it always had, and spoke to match–spritely and urbanely.

Eventually the Mask gave in to Despair, and cracked.