A horror comedy centered on a guy who learns that his unusual stomach problems are being caused by a demon living in his intestines. – IMDb

Normally a movie with this ridiculous a premise would get some mild interest from me and that is about it but the cast (Ken Marino, Stephen Root, Patrick Wharburton, Gillian Jacobs among others) that has come together for this comedy/horror movie about a monster that lives in a stressed out guy’s ass just put this one over the top and made it a must see for me.