As Ram would probably say; its just a lot of surrealism and nonsense.
But if its not a song what is it?
I cant vote either way because im not sure.
But when played backwards, its supposed to hold several clues to the Paul is Dead rumors, (car wreck, ambulance sirens , etc.)
Maybe that was the whole point of R9.
Of course Paul is alive and well, I just think the Beatles heard the rumors and decided to play along or something.