On the other hand, Paulie Shore's 'Son in Law' poster has a barn in the background, the poses are good and Carla Guillgano's leopard print outfit has a broach where Nan's cameo would be. And in the Mad magazine X-Files cover, there is no house at all but Agent Scully is wearing Nan's dress.
So while I could make a mathematical algorithm factoring the overalls, the dress, the cameo, the pitchfork, the house (specifically the Gothic window) and the poses, it would still fail to match how well I see each image matching the spirit of the original, and the spirit of parodies in general.
What do YOU think? What elements NEED to be in an A.G. parody, and what are the best and worst examples?