Ever try to write a well-known passage in limerick form? It’s harder than you think. How about this one: “There once was a lady who’s sure / All that glitters is golden and pure/ There’s a stairway that heads up to heaven...
A longstanding injunction against mentioning the devil by name is the reason why terms like Old Ned, Old Billy, and Old Scratch have come to be euphemisms for his unholiness. This is part of a complete episode.