Dr. Grumpy: "Hmmm. Have you talked to your internist about this?"
Mrs. Popliteal: "No, I talked to this lady at the Post Office."
Dr. Grumpy: "A lady at the..."
Mrs. Popliteal: "She was wearing a knee brace, so she must have known what she was talking about. Anyway, she said I need an MRI. Will you order one?"