A man went to the dentist to get a tooth pulled. First thing
the dentist says to him, "I'll give you a shot to numb your jaw."

The man replies, "No, please don't do that!
I'm absolutely terrified of needles!"

The dentist said, "Okay, I'll use gas to put you out."

The man says, "No, you can't do that, either.
I'm allergic to the gas."

So the dentist said, "Hang on a minute, I'll go look for
something else."
After a bit, he came back with a couple of pills.

The man asks, "What kind of pills are these?"

The dentist said, "Viagra."

The guy said, "What? Why these?"
The dentist said, "Look, they won't do shit for pain, but they'll
give you something to hang on to while I pull your damn tooth."