A 92 year old man went to the doctor to get a physical.  A few days later, the doctor saw the man walking down the street with a gorgeous young lady on his arm.

At his follow up visit, the doctor talked to the man and said, "You're really doing great, aren't you?"

The man replied, "Just doing what you said Doc: 'Get a hot mamma and be cheerful.'"

The Doctor said, "I didn't say that. I said you got a heart murmur. Be careful."