Well I search bared and nothing came up, may be a repost.
there is this sick as fuck movie called the human centipede part 1. Picture having ur tendons in ur knees cut so you can only walk on your knees, and ur mouth is sewed to the anus of the person in front of you and theres someone sewed to ur anus. So you keep shitting and eating shit basically.
http://www.youtube.com/watch?v=_hLAfSbFkvY
if you wanna see what i mean look at 2:17 shits fucked