So the guy with a bad tooth has to see the dentist. Doc takes a look & says I'm gonna have to pull that tooth. As the doc is readying his novacaine syringe the patient exclaims oh no doctor I can't do needles! Okay says the doc and he reaches for the gas mask. Patient screams oh no doc I'm extremely claustraphobic! I can't wear a mask! And that gas'll make me sick! I can't do that either!
Doc thinks for a few seconds & asks can you take a pill? Guy says sure, I can take a pill. Doc leaves the room for a minute. Comes back, hands the guy a pill & says here's your Viagra. Patient answers I don't take viagra?
Doc says well your gonna need something to hang on to when I extract that tooth without anaesthesia ...