A man went to the doctor’s. The doctor asked what the problem was.
“Well, “said the man, “My wife and I aren’t getting as much out of sex as we used to, doctor. “
“How old are you, Mr Jones?” asked the doctor.
“I’m 87, doctor. “
“And how old is your wife, Mr Jones?”
“She’s 79, doctor. “
“Just a minute, “said the doctor, “You are 87 and your wife is 79 and you don’t think you are getting as much out of sex as you used to?”
“That’s right, doctor. “
“When did you discover this?”
“Twice last night and once this morning!”
This joke is included in the Black Book of Jokes. You can order it from here.