A Joke
Asker: What do you call a musical about Jack the Ripper.
1st answerer: Disgusting.
2nd answerer: Something which will never be made anymore than a musical about a man-eating plant from outer space trying to take over the world.
3rd answerer: They'll never make one, anymore than a musical about Sweeny Todd.
Asker: "The Ripper of No Return".