I've long since learned the lesson that joking around with them is absolutely never, ever worth it. It's sad, because it presumably makes their jobs joyless, and the actual nice people more likely to leave. But here we are.
The terrorists are winning. sigh
Its a hard point to convey without really spelling out the underbelly of American society
If you wanted?!
No way this is real.
I mentioned the sign and was threatened with a "deep" inspection and guaranteed enough detention time to miss the flight.
We dumped it, boarded a 5 hour flight, pushed the call button and asked for cow milk to help get through the flight. They came back, 3 other moms did the exact same thing, and got told they were out of milk.
Quite unpleasant, security theater is such a waste.
I've found American Border Patrol and Customs to be fairly relaxed though. I am a white American guy from the Midwest, so that may have something to do with it. I find the TSA to be more of a pain.