Customer: I bought two expensive dictionaries here half an hour ago, but I forgot to take them with me. Manager: Who served you, sir? Customer: The who is standing behind the counter. Manager: Which books did you buy? Customer: The books which are on the counter. Manager: Did you serve this gentleman half an hour ago, Miss Roberts?He says he's the man who bought these books. Miss Roberts: I remember, sir. The man whom I served was wearing a hat. Manager: Have you got a hat, sir? Customer: Yes, I have. Would you put it on, please? Customer: All right. Manager: Is this the man that you served, Miss Roberts? Miss Roberts: Yes, sir. I him now.