Three old men were at the doctor’s for a memory test. The doctor asked the first old man: “What is two times two?”

“194,” came the reply.

The doctor turned to the second old man, “What is two times two?”

“Thursday,” replied the second old man.

Finally the doctor addressed the third old man, “What is two times two?”

“Four,” came the answer.

“That’s great,” said the doctor. “How did you get that?”

“Simple,” said the third old man, “I subtracted 194 from Thursday!”