I saw it. I had an ex who was big into horror movies, so I got to see every crappy piece of torture smut that came out in the second half of the 00's. The Saw series (first one was actually pretty good - the ending was awesome), Hostel, Hostel II, Hills Have Eyes, House of Wax, Texas Chainsaw Massacre remake, etc. And it was her fault I saw Wicker Man, which was probably why it ended. Human Centipede was just same old formula - crazy dude tortures people - just with a new form of torture. Best part of the movie was the guy in the theater who shouted "let's connect on LinkedIn". Guess you had to be there.
The one time I got to pick a movie, we went to Madagascar. Still one of my favorite movies ever, because other than a cartoon lion biting a cartoon zebra in the ass, nobody tortured anyone. It was Citizen Kane of Shawshank in comparison to the movies I saw around it.