Test For Memory Loss

The doctor was administering a test for memory loss to three old gentlemen.

He asked, "What is 3 times 3?".

The first old man replied, "One Hundred and Fifty Six."

The doctor turned to the second old man. "What's three times three?"

The second old man said, "Tuesday."

The doctor then asked the same of the third man who answered, "Nine."

"And how did you arrive at that answer?", asked the doctor.

The third old man answered, "Easy...I just subtracted Tuesday from 156 and I got nine."