Man knocks on door: "Murderer." Woman answers:"You're not a real murderer, you just want to sell me insurance." Man at door: "No, Madam, I really am a murderer." Woman: "You're an insurance salesman." Man: "I won't sell you insurance, you have my word. I only want to murder you." Woman opens door to man. Man: "Mind you, I don't know if you've ever considered the advantages of a really comprehensive life insurance policy ..."