A boy whose mother had tried everything from bribery to reasoning to painting his thumb with lemon juice to discourage him sucking it, was finally told, "If you don't stop sucking your thumb, your stomach is going to blow up like a balloon." Later that day, walking in the park, mother and son saw a pregnant woman sitting on a bench. The four-year-old walked up to her, considered her gravely for a minute, then said, "Naughty ... I know what *you've* been doing."