C.O.G. is an American comedy-drama film directed and written by Kyle Patrick Alvarez, and starring Jonathan Groff. The film is based on a David Sedaris short story from his book of collected essays, Naked. It marks the first time one of Sedaris' stories has been adapted for film. It co-stars Denis O'Hare, Casey Wilson, Dean Stockwell, Troian Bellisario, and Corey Stoll.