This episode is a lot like the previous and brilliant "the gang does a clip show," where on the surface it seems like a generic home alone parody, but after a deceptively long parody and recreation of Home alone, it soon becomes one of the goriest and most disgusting episodes of the show, with it soon turning into a parody of Saw. With a plethora of great physical humour and a really funny concept, this is an easily overlooked episode in a season that I think is over-hated. I can't say that about the next episode, which is my least favourite in the show. 13x9 isn't even that awful of an episode, a testament to how good this show is.