My Last Twelve Hours of Being the Likable Teacher

Tomorrow, we're trying impromptu speaking. About half of my class is going to hate my guts after I make them stand up in front of the class to argue for or against smoking bans, then ask the next person whether they would or would not choose to be invisible if it meant they had to stay invisible for the rest of their life, then ask the next person about trickle-down economics. My winning streak ends here.