Do you think, at your age, it is right?'

    `In my youth,' Father William replied to his son,
      `I feared it might injure the brain;
    But, now that I'm perfectly sure I have none,
      Why, I do it again and again.'

    `You are old,' said the youth, `as I mentioned before,
      And have grown most uncommonly fat;
    Yet you turned a back-somersault in at the door--