The teacher noticed that Johnny had been daydreaming for a long time. She decided to get his attention. "Johnny," she said, "If the world is 25,000 miles around and eggs are sixty cents a dozen, how old am I? "Thirty-four," Johnny answered unhesitatingly. The teacher replied "Well, that's not far from my actual age. Tell me...how did you guess?" "Oh, there's nothing to it," Johnny said. "My big sister is seventeen and she's only half-crazy."
老師注意到約翰尼走神很久了，她決定吸引他的注意力。“約翰尼，”她說，“如果地球的直徑是25,000英哩，雞蛋每打買60美分，那么我多大？” “三十四，”約翰尼毫不猶豫地回答。 老師答道，“嗯，那與我的實際年齡差不多。告訴我...你是怎么猜到的？” “噢，這沒什么。”約翰尼說，“我的大姐是17歲，而她有一半瘋狂。”