After class, the absent-minded professor asked if anybody had seen his coat.
　　"You have it on, sir." he was told.
　　"Oh, thank you very much," he replied, "Otherwise, I might have gone off without it."

　　心不在焉的教授

　　课后，心不在焉的教授问谁看到他的外套了。
　　“你穿着呢，先生。”有人告诉他。
　　“哦，多谢，”他回答说，“不然，我可能没有穿就走了。”