When you were a kid making faces, your mother might have told you that your face could freeze like that, and you'd have to live with it forever. That's exactly what happened to Aaron in Cautionary Tales.
But the story isn't entirely about him. Aaron goes to a support group for people who have to wear their young indiscretions for the world to see. How many different cautionary tales can you identify? They will be revealed during the credits. The moral of the story is that you should always listen to your mother. (via Metafilter)