There are places even the celebrated body-horror filmmaker David Cronenberg wouldn’t go. Places—you might say—where the sun don’t shine. Such a place is explored in Bad Milo!, an energetic exercise in execrable taste that locates the source of its protagonist’s problems in the lower gastrointestinal tract. Ken (Ken Marino) carries a lot of stress inside him: His job as a number-cruncher is poisoned by a corrupt boss (Patrick Warburton); his wife (Gillian Jacobs) wants a child; and his father (Stephen Root) won’t speak to him. Ken’s mother (Mary Kay Place) has taken up with a much younger man (Kumail Nanjiani), and they suspect Ken’s physical ailments are a sign of erectile dysfunction.
If only. No, the source of Ken’s chronic stomach pain is the big-eyed, sharp-toothed demon living inside his colon.