My wife and I were once in an exit row on a UAX flight with a mid-20s FA who was very blasé about the whole safety routine when talking to us about our role in the event of an emergency. He concluded his spiel with the line, delivered deadpan, "Throw the door out through the window. Don't scratch the paint." And then walked away. It took two seconds for the line to register and then the whole row cracked up.

"Don't scratch the paint" has been a favorite in our family ever since.