My favorite "title drop" in a song is in How Soon is Now by the Smiths. After an instrumental break, Morrissey sings, "You say it's gonna happen now? What exactly do you mean..." You can almost hear the next line should be "How soon is now" but there's a pause and then he sings, "See I've already waited too long..." The title captures the mood of the song but is never actually said. It feels intentionally left out.
On the movie front, No Country for Old Men does something similar.