Extracting a tooth

A guy goes to a female dentist to have a tooth extracted. She pulls out a numbing needle to give the man a shot.

"No way! No needles. I hate needles" the patient said.

The dentist starts to hook up the nitrous oxide and the man says: " I can't do the gas thing. The thought of having the gas mask on suffocates me!'

The dentist then asks the patient if he has any objections to taking a pill.

"No objection," he says. "I'm fine with pills."

The dentist gives him a couple of pills.

He swallows them. "What are they?" he says.

"Viagra," says the dentist.

"Heck," the patient says, "I didn't know Viagra worked as a pain killer."

"It doesn't" said the dentist, "But it will give you something to hold on to when I pull your tooth out."