Mr Robinson never went to a dentist, because he was afraid:"
but then his teeth began hurting a lot, and he went to a dentist. The dentist did a lot of work in his mouth for a long time. On the last day Mr Robinson said to him, "How much is all this work going to cost?" The dentist said, "Twenty-five pounds," but he did not ask him for the money.
After a month Mr Robinson phoned the dentist and said, "You haven"t asked me for any money for your work last month."
"Oh," the dentist answered, "I never ask a gentleman for money."
"Then how do you live?" Mr Robinson asked.
"Most gentlemen pay me quickly," the dentist said, "but some don"t. I wait for my money for two months, and then I say, "That man isn"t a gentleman," and then I ask him for my money