Let Me Adjust The Chair...

A lady goes to the dentist. In the chair, the dentist notices a little brown spot on one of her teeth.

"Aha, caries! I'll have to drill this one out! " says the dentist.

"Oh no, please! I mean - I'd rather have a child and endure that pain instead! " cries the lady.

"In that case, let me adjust the chair first," replies the dentist.