As part of a school project, a 13-year-old boy had to diagram his family tree and write four descriptive sentences about each person in it. Naturally, he waited to start on the project until the night before it was due. His plan was to start by listing everyone's age in the first sentence. After quizzing his mother about the ages of other people in the family, he finally asked how old she was. Realizing that the information would be shared with the whole class, Mom hesitated a moment before answering, "Twenty-nine." Without skipping a beat, the boy glanced up from his work only long enough to reply, "Not in dog years, Mom!"