The Nativity scene is an iconic Christmas decoration, but it only has a tenuous biblical foundation. Christmas traditions are often varied and strange, and representations of the Nativity can vary from region to region. In Spain, one element of the Nativity scene is the caganer, a peasant man defecating behind the barn. Yes. That is a real thing. While all traditions are unusual to outsiders, Catalonia’s tradition of poop-related Christmas things might be the oddest.