By Erin Strecker
Updated August 29, 2013 at 01:00 PM EDT

And you thought you were stressed out.

The new movie Bad Milo!, executive produced by Jay and Mark Duplass, centers on a guy (Ken Marino) whose crazy anxiety and stomach problems are being caused by a demon living in his intestines. When he gets too upset, the demon comes out and attacks whomever is driving him crazy.

Or, as Marino previously told EW, ““I got a call from Mark Duplass, and he’s like, ‘Hey, Ken, do you want to be in this movie about a monster that comes out of your ass? I was like, ‘Where do I sign up? And when’s the fitting?’”

Check out an exclusive clip of the horror comedy below:

Bad Milo!, also starring Gillian Jacobs, Peter Stormare, and Patrick Warburton, is available On Demand today and in theaters Oct. 4.