When my friend got a job, her husband agreed to share the housework. He was stunned by the amount of effort involved in keeping a house clean with small boys to pick up after, and insisted that he and his wife shop for a new vacuum cleaner.

The salesman gave them a demonstration of the latest model. “It comes equipped with all the newest features,” he assured them.

The husband was not convinced. “Don’t you have a riding one?” he asked.