A mother goes into her son's room and nudges him awake, saying, "C'mon, son, you gotta go to school."
Son, still groggy, whines, "I don't wanna go to school. The kids all pick on me, and the teachers hate me."
Mom, in a more serious tone: "You have to go to school."
Son: "Give me one good reason why I should go."
Mom: "Because you're the principal."