Old married couple are at the gynecologist's

and Sam is sitting in the waiting room while Sadie has her appointment with the doctor.

So the doctor says to her, "Now Mrs. Grunchik - I hope you realize that because of the symptoms you describe, I'm going to have to ask you some very personal questions ... will you mind?"

So Sadie says, "Ask away doctor - do you think anything can embarrass me at my age?"

So the doctor says, "OK thanks. First question I need to ask is whether you still have intercourse."

So Sadie thinks for a moment, realizes she honestly can't remember, and so she calls out to Sam in the waiting room: "Sam - do we still have intercourse?"

And Sam yells back, "No - I told you before we left the house, Sadie - just Blue Cross and Blue Shield!"