The dentist says “yep, that’s the worst cavity I’ve seen in some time. That tooth definitely has to come out. But don’t worry, a little gas and you won’t feel a thing.
Can’t do that doc. Gas makes me whoosy the whole day long and I have to drive home.
Well then a little Novocain and we’ll have that thing out in no time.
No can do Doc, I’m allergic to Novocain.
Well then how about a Viagra?
Viagra will help with the pain?
No, but it will give you something to hold on to while I yank that tooth out.