"I want you to help me stop my daughter from gambling," a worried father said to his girl's principal. "I don't know where she gets it from but she's always betting."

"Let me take care of it," says the principal. Ten days later he phones the girl's's father. "I think I've cured her," he says.

"How?"

"Well, I saw her looking at my beard and she said, 'I bet that's a false beard.'

'How much do you want to bet?' I said, and she said "$10 "

"What happened?" asked the father.

"Well, she tugged my beard, which is real of course, and I made her give me $10. I'm sure this will teach her a lesson."

"I don't think so," said the father. "She bet me $20 yesterday that she'd pull your beard with your consent by the end of the week"