Human Centipede star Ashlynn Yennie told Screamfest LA attendees at the world premiere of Schism tonight that what appealed to her about starring in the film was the opportunity to play a good girl, namely the sexy and supportive girlfriend of a Baton Rouge chef haunted by visions of his violent and evil past.

Fortunately, writer/director Adam Gierasch’s idea of a good girl is someone who goes completely nude during sex. Gierasch and Yennie both explained how the full frontal nudity was necessary because they wanted an honest portrayal of people fucking.

Yennie’s nude scene is lengthy and wonderfully gratuitous and comes early in the film, which is a good thing because Schism goes gonzo pretty quick, making it a challenge to sit through. Co-starring with Yennie are Callum Blue (“Dead Like Me”) as the chef, Vinnie Jones (Snatch) as a vicious human trafficker, and stunner Nicole LaLiberte (Girls Against Boys) as a prostate-massaging stripper.