After many years, a woman's original wedding band had become worn and thin, so she asked her husband to buy her a new ring as her anniversary present. But this time she asked him to buy her one with diamonds.

They went down to the jewellery store to pick one out. As they waited for the clerk, she said to her husband, "My eyes aren't as good as they used to be, so I'd really like diamonds I can see."

Having overheard their conversation, a lady standing nearby remarked, "Sir, it would be cheaper if you bought her glasses."