Stressed out milquetoast office worker Duncan (an excellent and engaging performance by Ken Marino) discovers that he has an angry little beast named Milo living in his intestines who occasionally comes out of his rear end to kill anyone who causes Duncan to feel either mad or upset. Director/co-writer Jacob Vaughan relates the enjoyably off-the-wall story at a zippy pace, maintains a likeable quirky tone throughout, gets lots of laughs from the hysterical sense of no-holds-barred outrageous humor, and even manages a few tender and touching moments amid all the jaw-dropping lunacy. The adorably grotesque Milo serves as a strong metaphor for the potentially toxic and destructive consequences wrought by letting one's deeply repressed id and subconscious run amuck as well as the need to face your emotional and psychological demons head on in order to make peace with said demons. Moreover, it's acted with aplomb by an enthusiastic cast: Gillian Jacobs as Duncan's sweet and concerned wife Jillian, Peter Stormare as flaky therapist Highsmith, Mary Kay Place as Duncan's loopy mother Beatrice, and Patrick Warburton as jerky boss Phil. An absolute hoot.

Clearly I was delaying this watch for over the past couple of years. Finally, I ended watching it during this holiday season (December 2015). I am glad to get over with it and sad for dragging it this far, because the film was not that bad as I have heard.May be we call it the men's version of the movie 'Teeth'. Since the sexual intercourse is kind of complication for the theme from this movie to draw a better storyline, they have introduced a fictional character that detachable from the human body. That is very funny as well as disgusting.This horror-comedy was average, but very enjoyable and better than being a worse. It was a short flick and had a surprise twist and turns, but the quality to excite us is what's missing. Had a decent story, but the scenes that constructed were not top notch. Being a B movie is that why it passes the flaws' test because of the restricted budget and for not having a top star in the lead. Simply one time watch movie and nothing a big deal about it.5/10

Duncan (Ken Marino) is chased by some mysterious horror. Then it flashes back 123 hours. He is in the doctor's office with his wife Sarah (Gillian Jacobs) with a polyp in his colon. He hates his job and his boss Phil (Patrick Warburton) is making him fire people. He has a new therapist Highsmith (Peter Stormare). His mother Beatrice (Mary Kay Place) brings her boyfriend Bobbi (Kumail Nanjiani) and a fertility doctor to dinner. He poops out a monster which kills everyone who causes him stress. He bonds with it naming it Milo.It has some minor funny moments. Milo himself generates very few laughs. It's a little gross and very perplexing monster. I think the scene coming out in front of the therapist needs to show their connectivity more. Milo can get hurt and Duncan can get hurt in sympathy in that scene. The horror part of the movie isn't that scary. The comedy has a few good scenes. It's a B-movie that is slightly better than a butt monster ought to be.

It's one thing to make a movie where a man's self-aware hemorrhoid goes on a bloody rampage against his enemies. It's something else to premise that concept on a coming-of-age tale for late 20's hipsters. Bad Milo! opens with Duncan's doctor stating, "If you don't have a baby with your wife, someone else will." He works at a financial services company; a job he despises. A recurring gag results from Duncan's boss asking him to fire people and send them away with care packages containing trashy trinkets. Duncan needs help and is too stubborn to even acknowledge it. He really should. That much stress can tear up your insides.A monster comes out of his ass. His therapist suggests he bond with it. So, he names it Milo. Milo isn't your typical movie monster. His practical effects design resembles the Mogwai from Gremlins albeit with no fur. We never see Milo properly exit Duncan's body, which is more effective in freaking us out. Unlike other high-concept movies like The Human Centipede and its sequel this film doesn't need excessive gore or brooding dialog. Bad Milo! is too thoughtful for mad scientists, cars that don't start, or Nazi experiments. In fact the movie doesn't explain why Milo exists beyond some pseudoscience. Duncan's efforts to bond with Milo are the focus of the story.Duncan spends a lot of time talking to his therapist who suggests Milo may be a byproduct of Duncan's non-relationship with his biological father. He goes to meet dad who walked out on the family long ago. Eventually they make it up after a plot twist you could easily predict. That doesn't lessen the amusement of seeing Duncan's id go against his dad's. Duncan wins, so he has to find a way to reach out to Milo in a way he'll understand. He finally stands up for himself by forcibly subduing his little buddy. Milo attacks people off screen except for the doctor who literally gets de-masculinized. This between explicitness and queasy curiosity happens most of its runtime. The movie pads this tension with over the top secondary characters like Duncan's insufferable boss and his mom. Duncan's mom is married to man half her age. Some of these characters' deaths are amusing but the dialog feels forced. These jokes play like the writers just knew they were funny. Maybe they would be in a movie lacking butt monsters. Seriously, Bad Milo! is a movie where the premise is its own over the top character.