A mother is in the kitchen preparing breakfast and shouts to her son who is upstairs:
“Come on, you’ll be late for school!”
“Shan’t,” came the reply from the bedroom.
“Why, what’s wrong?”
“The teachers hate me and the kids despise me!”
“I’ll give you two good reasons why you should go.”
“What are they?” – he asks.
“One – you’re forty-one, and two – you’re the headmaster.”