A man gets on a train with his little boy, and gives the conductor only one ticket. 'How old's your kid?' the conductor says, and the father says, 'He's four years old.' 'He looks at least twelve to me,' says the conductor. And the father says, 'Can I help it if he worries?
There is something about saying "Ok" and hanging up the receiver with a bang that kids a man into feeling that he has just pulled off a big deal, even if he has only called the telephone company to find out the correct time