The Human Centipede or An answer to the question no one asked...

[Rev. Rye]

The story of a man who becomes sexually obsessed with a DVD recording of the first film in the series, The Human Centipede,

Well, at least that explains how there's going to be a sequel after the mastermind behind the original centipede died.

and uses sandpaper to pleasure himself whilst watching the film.

Somehow, in a film like this, using sandpaper as a masturbatory aid just makes me ask "Why?"

He decides to create a "human centipede" of his own, this time comprised of twelve victims as opposed to the first film's three. He uses his human centipede to his own sexual delight, taking sexual pleasure in watching the victims of the centipede defecate in each other's mouths,

So, not much different from the original, then?

and using barbed wire wrapped around around his penis to rape the woman at the end of the centipede.

That seems even more counterproductive than the sandpaper, since that'll almost certainly prick his prick and thus lose the erection he had.