I suffered through the Human Centipede 2: Full Sequence. Not due to any genuine interest in the movie, but as a badge of pride for my pain threshold. It's astonishing to see myself type this, but... the original actually "made sense" and was more believable than this farce. The only thing I will give them credit for is the casting of the main antagonist; a guy who if placed next to quasimodo as the last two people to pick on a dodgeball team, would be picked last. But this was just gore for the sake of gore. The tire iron (or was it a crow bar) became almost comical in its use and every single member of the 12-person centipede crew should have been dead from exposure, blunt force trauma, or blood loss long before their assembly. You can also use your own imaginations when I mention that laxatives were used during the "feeding" routine. If you ever want to scar a child for life and have them sue you later on for child abuse, this is the movie to show them.
To leave this on a more positive note, I just finished Miller's Crossing and it was much more entertaining. Good story, good acting, and authentic dialogue.