“Stand far behind her and ask her a question, and then slowly move up and see how far away you are when she first responds.”
The old man, excited to finally be working on a solution for the problem, runs home and sees his wife preparing supper.
Standing 20 feet away, the man asks, “Honey, what’s for supper?” After receiving no response, he tried it again 15 feet away; again no response. He tried it again at 10 feet away and still no response. Finally he was just 5 feet away, “Honey, what’s for supper?” to which she replied, “For the fourth time, it’s lasagna!”