It only happened to me once; I had time to spare, so I had fun with it. He came up with his partner nearby but pretending not to listen. He asked me how I was and I said "fine". Then he asked me for my BP and I gave it to him. He asked why I was going to Chicago. I got fed up and replied: "See spot; see spot run; go spot; go spot go . . . bother another passenger". The look was priceless. I was given SSSS treatment and filed a complaint.
I wish I could have been there for that "incident"