Understatement: is irony (laugh) of something that is pitiful.
Answer: A) they're showing the movie "don't turn out the lights" in a dark theatre.
Because, the movie is telling them to not turn off the lights in the theatre.
B) I think the ushers might question a grocery bag of candy under your sweater, as you can't trust a man will candy.
During her last term of office, the President was always having to berate Congress for obstructing his proposed legislation and other things.
A) Derek treated his motorbike with abominable disregard