what is your fav most messed up movie?

i thought it would be something cool to do for my first post :3
mine is salo or the 120 days of Sodom. the quick rundown of the movie is it was based in early ww2 when Italy was under the control of the Nazi forces. this is when 3 fascist dictators kidnap 8 18 year old boys and 8 18 year old girls and they submit them to 120 days of mental sexual and physical torture. so really it is a very artsy movie with lots of rape torture and shit eating :D.

please do not blame me for anything that might happen to you when watching the movie.