Lee's Dentist on his birthday.

Lee goes to a female dentist to have a tooth extracted. She pulls out a numbing needle to give Lee a shot.
"No way! No needles. I hate needles" Lee said.
The dentist starts to hook up the nitrous oxide and Lee says " I can't do the gas thing. The thought of having the gas mask on suffocates me"
The dentist ask if he has any objections to taking a pill. "No objections" he says. I'm fine with pills.
The dentists gives him a couple of pills. He swallows them.
"What are they?" he asks. Viagra says the dentist
"Heck, I didn't know Viagra worked as a pain killer" "It doesn't" said the dentist "But it will give you something to hold onto when I pull your tooth