An invisible man is here to see you
Nurse: Doctor, there is an invisible man in your waiting room.

Doctor: Tell him I can't see him now. Next.

Can you pay the bill?
A man was brought to the hospital, and taken quickly in for emergency surgery. The operation went well, and as the groggy man regained consciousness, he was reassured by a Sister of Mercy, who was waiting by his bed.

"Mr. Smith, you're going to be just fine," said the nun, gently patting his hand. "We do need to know, however, how you intend to pay for your stay here. Are you covered by insurance?"

"No, I'm not," the man whispered hoarsely.
"Can you pay in cash?" persisted the nun.
"I'm afraid I cannot, Sister."
"Well, do you have any close relatives?" the nun essayed.
"Just my sister in New York," he volunteered. "But she's a spinster nun."

"Oh, I must correct you, Mr. Smith. Nuns are not 'spinsters;' they are married to God."

"Really...wonderful," said Smith. "In that case, you can send the bill to my brother-in-law!