I was on a trip recently and during a down time someone started this game. You had to come up with sayings from books, movies, TV, what have you, that have stayed in your mind waiting for the right time to use a particular saying.
I have one, but I have never had the guts to pull it out and use it, much as I would have liked to ..................
You are so low on the scale of humanity, that it would require a special dispensation from heaven to raise you to the level of total degradation.
I believe it is one of Agatha Christie's.