An elderly couple went into a doctor. They told the doctor, "we're having some trouble with our sex lives. Could you watch and offer some suggestions?"
The doctor replied, "I'm not a sex therapist. You should find someone else".
The couple said, "No, no, we trust you".
After watching them have sex, the doctor said, "You don't seem to be having any troubles. I wish my sex life was as good. I can't give you any suggestions".
This was repeated the next week and also the third week. After they had finished on the third week, the doctor said, "You aren't having any trouble at all. Is this your idea of kinky sex?"
The man replied, "No, actually the problem is if we have sex at my house my wife will catch us. If we have sex at her house, her husband will catch us. The motel charges us $50, and we can't afford that. But you only charge $35, and medicare pays half of that".