A couple, both age 79, went to a sex therapist's office. The doctor asked, "What can I do for you?"
The man said, "Will you watch us have s*x?"
The doctor looked puzzled, but agreed. When the couple finished, the doctor said, "There's nothing wrong with the way you have s*x." and charged them 1,000 Naira.
This happened several weeks in a row. The couple would make an appointment, have s*x with no problems, pay the doctor, then leave.
Finally, the doctor asked, "Just exactly what are you trying to find out?"
"We are not trying to find out anything," the man replied. "She's married and we can't go to her house. I'm married and we can't go to my house. The Hotel charges 3,500 Naira. The Guest House charges 5,000 Naira. We do it here for 1,000 Naira... and I get back 800 Naira from Medicare.