I saw it a few years ago in a movie theater. It was me, my gf at the time, and just 4 other people in the theater. There was a father and his teenage son whom had some sort of mental illness, and there was a black couple. The teenage kid laughed through the entire movie from start to finish. It was like one long, rolling, inappropriate laugh. I never had so much fun at the movies. I laughed my ass off.
After the movie, the kids father turned around and apologized (they were sitting right in front of us). I told him no bother, that we both had an amazing time and we were glad his son enjoyed it as much as we did.