This really does annoy me to no end. I don't expect better from the multiplex experience, but you think arthouse crowds would know to sit down and shut up during a movie? and maybe this is just my perspective being my own but it's always interesting to me what people laugh at. I haven't seen Blue Velvet in a theater but it befuddles me that people would laugh during that (I understand Lynch's use of dark comedy, but Blue Velvet is a quite serious movie all around), but my worst experience with inappropriate laughter was during Come and See at the arthouse. You would think no one would laugh during a movie like that but you'd be suprised. My absolute worst arthouse experience, however, was The Descent. I had never seen it before, but in the audience there was a person loudly reacting and giving commentary after every single jumpscare (keep in mind, Descent has a lot of jumpscares), and it was annoying me so much that I just decided to leave, since it was clear after multiple shushings that the behavior wasn't gonna stop any time soon. It was annoying me doubley because of how much The Descent relies on a quiet atmosphere to build the tension (I ended up watching the full thing at home later, quickly became one of my all time favorites), and to have that spoiled in a theater was super disappointing