Will you walk a little faster?" Said a whiting to a snail. "There's a porpoise close behind us, and he's treading on my tail.
Like the spider says, it's not a twist ending. Nowadays, we don't expect the endings of kids' stories to be quite as dark. Evil wins. One of the main characters is devoured by the other. In retrospect, horror is an obvious motif.
Message
Beware of people who try to flatter you to trick you into doing things.