That awkward moment when the back window of your car has been shot out, so you cover it with a black trash bag. Then you get pulled over, and the officer says,
"Are you aware that your back window is missing?"
And you have to bite your tongue and not say any of the dozens of very sarcastic responses that popped into your head, because hey, you respect law enforcement, even when they ask really, really stupid questions.
So you go with, "That explains the draft in here" and the officer does not, in fact, find it amusing.