With a title like “Atrocious,” you’ve got to admire the filmmakers’ confidence in regards to us nasty critic types. In any case, this muy creepy trailer from Mexican first-timer Fernando Barreda Luna promises a more violent experience than “The Blair Witch Project,” or “Paranormal Activity.” This time, those meddling kids get in way too deep with a serial killer, or something. Via Cinematical, which has a NSFW warning for language (the word “shit” is used once, not too shocking these days). I guess it’s apposite  if your boss doesn’t like you wasting your time watching scary trailers at work, though.