Mari Lwyd: The Welsh Horse Skull Tradition a Preacher Tried to Kill

Somewhere in south Wales, most likely between Christmas and Twelfth Night, a dead horse might knock on your door. Its skull has been stripped, dried and mounted on a pole, its eye sockets are stuffed with baubles or old bottle bottoms, and someone is crouched underneath a sheet controlling its jaw so it can snap at you while its friends sing for their supper. If you can out-rhyme it, it leaves. If you can't, it comes inside. This is the Mari Lwyd, and it's one of the strangest customs still...