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!

A lecture about English
A linguistics professor was lecturing to his English class one day. "In English," he said, "A double negative forms a positive. In some languages, though, such as Russian, a double negative is still a negative. However, there is no language wherein a double positive can form a negative."

A voice from the back of the room piped up, "Yeah, right."