You could approach the problem via the backdoor by having them make up a few verses to a familiar tune with the syllabic stresses all wrong. Some of the results might be quite funny.

I've always been annoyed by Bruce Cockburn's faulty stress on the line "kicking at the darkness to make it bleed dayLIGHT". What's so annoying is that the song as a whole is so powerful that the darn guy can get away with an awkward stress.