The Human Centipede 2

The Human Centipede 2 (Full Sequence) is a 2011 psychological body horror film written, directed, and co-produced by Tom Six. An international co-production of the Netherlands and the United Kingdom, and the sequel to Six's 2009 film The Human Centipede (First Sequence), the film stars Laurence R. Harvey as a psychiatrically and intellectually impaired English man who watches and becomes obsessed with the first Human Centipede film, and decides to make his own "centipede" consisting of 12 people by using crude and violent techniques to connect their lips to each other's buttocks, including Ashlynn Yennie, an actress from the first film.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.