"Take your hand out of your pocket"
I got a new one today. After getting my ID checked at BOS (a process that took 15-20 seconds per person, even though I was using an MA license), I took my usual stroll through the WTMD. As I was passing through, I handed my boarding pass to the TSO on the other side and took it back just as I was getting through the WTMD. She handed it back to me and I started stuffing it back in my pants pocket. As I walked past her, she said, "Take your hand out of your pocket."
I couldn't help it; I just burst out laughing. I mean, really laughing out loud. The TSO standing next to her (Apparently, it took two of them to check out the passengers.) gave me a nasty look and they huddled together, trying to figure out what they could do to me for not respectin' their authori-tah. Sorry, kids, too late to give me a secondary. I was laughing so hard that I couldn't even ask them what on Earth they were worried about.
Ah, good ol' BOS. The land of, well, people who have pockets.
Mike