Santa Claus or Satan?
I told the class, “Your behavior controls my behavior.” I said, “You get to choose. Who do you want standing up here, Santa Claus or Satan? Santa Claus is a jolly, white-haired, old man who gives presents and grants favors. Satan is a mean guy who enforces the rules to the letter of the law without pity or consideration for your situation. Now who do you want standing up here?”