2. Kidney Rape - The Human Centipede 3 (Final Sequence)
The most f***ed up moment in a movie full of f***ed up moments is in fact a nightmare sequence, in which prison warden Bill Boss (Dieter Laser) is subjected to what the inmates call a "death rape". An inmate who Ross callously castrated earlier in the film stabs him in the kidney and other inmates hold Ross down as the man has sex with the wound, much to the delight of himself and the other prisoners. It's truly one of those "why am I watching this?" moments, where you wonder how it can possibly get any worse. At least after this, it pretty much doesn't.