A man asked the pharmacist for a vial of cyanide. “What for?” asked the pharmacist. “I want to poison my wife.” “Sir, I can’t sell you cyanide for that!” The man reached into his wallet, pulled out a photograph of his wife, and laid it on the counter. The pharmacist gasped, recovered, and politely remarked, “Uh, I’m sorry, sir. I didn’t realize you had a prescription!”