Mark Twain wrote a wonderful little story called something like "Punch in the Presence of the Passenjair."
The narrator is telling the reader that he's hung up on a piece of doggerel about being a tram conductor, something like this:
Punch, brothers, punch with care Punch in the presence of the passenjair! A buff trip ticket for a two cent fare A blue trip ticket for a three cent fare! Punch, brothers, punch with care! Punch in the presence of the passenjair!
After an extensive story of how the narrator has been driven insane, his wife's left him, he's lost his job and his health, repeating the doggerel regularly in the course of the tale, it comes to the end, that he determined to tell somebody (the reader). "And now, dear reader, YOU have it!!!"