Carnage

Carnage is a 2011 Dark Comedy film by Roman Polanski starring Jodie Foster, John C. Reilly, Christoph Waltz and Kate Winslet, based on the play God of Carnage by French playwright Yasmina Reza.

Two couples, Penelope and Michael (Foster & Reilly) and Alan and Nancy (Waltz & Winslet) have met to work out an incident. After an argument in a public park, Alan and Nancy's son Zachary hit Penelope and Michael's son Ethan in the face with a stick, causing the latter to lose two front teeth. Hoping to discuss it like reasonable people, Alan and Nancy have come to Penelope and Michael's place. While all four start out acting in an immaculately polite fashion, things quickly deteriorate to a state of total chaos involving vomit, booze and a mobile phone.

The film proper is set almost entirely in one New York apartment, except for two brief scenes at the beginning and end. There are only four actors in the whole film, with the exception of a few extras we see in the introduction and epilogue and some voices we hear over the phone. It is also notable for occurring almost in real time, save for the aforementioned bookends.

This film provides examples of:

 * Abuse Is Okay When It Is Female On Male: Sort of. Penelope eventually gets fed up and starts pounding Michael's back, but it isn't taken too seriously. However, it should be noted that the lack of reaction to it seemed less to do with gender, and more to do with the fact that (A) he was being really annoying, and (B) he is much bigger and more solidly built than her, and didn't seem to be in any pain from it.
 * Actor Allusion: Possibly unintentional, but this is not the first time we've seen Christoph Waltz in a long dark Gestapo-ish coat.
 * Amoral Attorney: Alan, as quickly becomes clear from his many phone conversations.
 * Book Ends: The scenes in the park at the beginning and end.
 * Brick Joke:
 * At the end of the film,
 * The fight between the two kids turns into one of these
 * California Doubling: Set in Brooklyn, New York; Filmed in Paris, France. For well-known reasons, Polanski cannot travel to the United States.
 * Comedic Sociopathy
 * The Comically Serious: Alan attempts to remain calm throughout all the absurdity.
 * Contrived Coincidence: happens to be taking the same exact pills whose possibly harmful side effects Alan, a lawyer to the pharmaceutical company that produces them, is discussing over the phone.
 * Cutting the Electronic Leash:  throws Alan's mobile into a vase full of water after growing weary of his constant phone conversations. At the end of the film, it looks like the phone is about to be subjected to even worse mistreatment.
 * Deadpan Snarker: All four principle characters are snarkers to a degree, but Alan has the deadpan side down.
 * Embarrassing Nickname: Doodle; Darjeeling.
 * Enemy Mine: One of the main points of the film is the constantly shifting alliances between the four, even though none of them really like each other that much.
 * Everyone Has Standards
 * Nancy is married to an amoral attorney who will calmly discuss severe problems happening to humans over the phone, yet she is absolutely disgusted to find out that
 * Despite not wanting them to come over, once he has been forced to accept that he can't avoid it, Michael goes out of his way to make them feel welcome because "Guests are guests".
 * Freak Out:
 * The most spectacular one has got to be Alan after
 * Nancy's reaction to  is pretty extreme.
 * Hypocrisy: All of them on some matter or other.
 * Hypocritical Humor: Lots, but
 * It Got Worse: The Movie. It says a lot about a deteriorating situation when throwing up in someone else's house isn't the worst of it.
 * In Vino Veritas: Once the characters start to get drunk, the sorry state of their relationships is quickly revealed.
 * Jerkass: Alan is quite transparently this right from the start, but all four of them reveal varying levels of this when certain buttons get pushed.
 * Kick the Dog:
 * Michael starts off seeming quite nice, but even before this persona has really cracked, he reveals that he.
 * Much of the reason why the situation deteriorates so much is because none of them can resist making snide, petty remarks on various matters that will inevitably cause offense.
 * Lady Drunk: Two of them, eventually. The two men also drink, but not as heavily.
 * Laser Guided Karma:  mocks Alan for being so distraught after  has killed his mobile phone. Not long after, a similar incident leaves   equally distraught.
 * Menstrual Menace: Penelope quickly hides a package of tampons out of sight when she takes Alan into her apartment's bathroom. It can be assumed her emotional fragility is at least partially related to PMS.
 * Minimalism
 * Minimalist Cast: Only four actors.
 * Nietzsche Wannabe: Alan is an unashamed nihilist.  gives Penelope a lecture on the hypocrisy of her liberal sensibilities.
 * No Ending
 * Not So Different: As the quarrel intensifies, it becomes all the more apparent how similar the two couples are to each other.
 * One Head Taller: Michael and Penelope.
 * Only Sane Man: Michael and Nancy seem to fill this role in the first half of the film. Both are soon revealed to be more than they seem.
 * Passive Aggressive Kombat: Oh, so much. At least until the "passive" goes completely out the window.
 * Real Time: Besides the opening and closing shots, the movie takes place in real time.
 * Sacred Hospitality: Mild version. Michael did not want Alan and Nancy to come over, but nonetheless made a real effort to make them welcome, and lasts for quite a long time before losing it.
 * Shaggy Dog Story: The two kids
 * Sliding Scale of Idealism Versus Cynicism: The conflict in the movie comes largely from the four characters having different positions on this scale, with Alan being the most cynical and Penelope the most idealistic. Neither the idealistic nor the cynical viewpoint is shown to be the right one; rather, the script ridicules both sides of the argument.
 * The Stoic: Alan in general remains straight-faced throughout most of the conversation.
 * Not So Stoic: ...Until of course,
 * Strawman Political: Sort of: usually with this trope, a political view is oversimplified for the sole purpose of discrediting it, and thus making the alternative more credible. All four of them have opposing views that are shown to be severely flawed in some way (and thus might be considered discredited), but since none of them are ultimately suggested to be right, the usual purpose behind a Strawman Political is averted.
 * Straw Misogynist: Both Alan and Michael have some very sexist views, that clearly paint them in an even more negative light. It should be noted that the women are not presented as being much better, so it's more a case of everyone being wrong.
 * Title Drop: The play on which it is based is called "The God of Carnage", which Alan references by name when discussing his open nihilism.
 * Troubled Fetal Position: Not quite, but Alan gets pretty close to one (see Villainous BSOD below).
 * Unsympathetic Comedy Protagonist: All four, to a greater or lesser degree.
 * The Voice: Michael's mother; Walter and Dennis (Alan's conversation partners).
 * Villainous BSOD: It's debatable whether he can be called a villain, (though he sure as hell can't be called "heroic"), but after his initial reaction, Alan collapses onto the floor and doesn't take part in the conversation for a while.
 * Vomit Indiscretion Shot:  serves as a major turning point in the film.
 * Why Did It Have to Be Snakes: Michael apparently has a crippling fear of rodents.