Do you ever watch something and then think: "What did I just see?". This is a candidate for that genre. Whatever else it is, it's also living proof that the British don't have a monopoly on silly humour
By the way, don't let the intrinsic daftness of this obscure the fact that it is actually a remarkable technical achievement, from the cardboard origami to the false-perspective shots that so closely imitate the original.
We can only quiver with excitement at what might come next from this new and iconoclastic school of filmmaking.