A dentist said to his patient, “This is just a shot to numb your jaw before we pull that tooth.” The patient replied, “No, don’t! I’m afraid of needles.” The dentist said, “Okay, I’ll use gas to put you to sleep.” The man said, “No, you can’t. I’m allergic to nitrous oxide.” The dentist said, “Hmm. I’ll be back in a moment. Let me look for something else.” A few minutes later he returned with a couple of blue pills. The guy asked, “What’s that? It looks like Viagra.” The dentist replied, “It is Viagra. It won’t lessen your pain, but they’ll give you something to hang onto while I pull that tooth!”