Agent, hailing a woman casually sauntering onto a rather full train: Ma'am! Ma'am! I'm sorry, but there is no eating or drinking on the trains, you will have to dispose of that before boarding!
("That" being a VERY lidless, VERY full, steaming-rising-due-to-hotness paper cup of something.)
Herself, in tone of Absolute Superiority: Oh, it's not. It's herbal.
Everybody In Ten Foot Radius: urrrrrrrrgh?!?!
...I will wonder until I die what she THOUGHT he said...