IFC Midnight has released a trailer for writer/director Tom Six’s The Human Centipede: Final Sequence. The new sequel is set in a men’s prison and features a 500-person centipede. As off-putting as an ass-to-mouth daisy chain of dudes is to us, the visual on the prison yard is as fucking amazing as it’s disturbing.

Franchise villains Dieter Laser (Dr. Heiter of Human Centipede: First Sequence) and Laurence R. Harvey (Martin of Human Centipede: Full Sequence) star as prison warden Bill Boss and his right-hand Dwight. Together they implement the human centipede program to keep rioting and insubordinate inmates in line.

Co-stars include Eric Roberts as a state governor and ex-porn star and Charlie Sheen goddess Bree Olson. The Human Centipede: Final Sequence arrives in theaters and VOD May 22.

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