Visit to dentist

A man went into a dentist and said "how much will it cost to have teeth taken out" "£90" said the dentist "that’s ridiculous" said the man.” I could lower the dosage of the anesthetic and it would cost £60" "that’s still to expensive,” said the man "if I don't use any anesthesia I could knock the price down to £20". Still to much" said the man.” Well one of my students can do it for £10" said the dentist "perfect" said the man "book my wife for next Tuesday".