What is your WORST cinema experience?

Was at a midnight opening showing for the last installment of the Harry Potter and the Deathly Hallows . I was very excited to see the movie with my friend. We had come prepared with snacks galore. Two teenagers sat down in the row in front of us (whatever it's a packed theater honestly thought nothing of it, yet). Within five minutes of the movie starting it became abundantly clear that these two didn't give a fuck about the movie and had only come to spoil everyones good time. About every 15-20 minutes they would start acting up (yelling rude things throwing stuff at the screen). Anyone who hushed them was cussed out. Somehow these two idiots manage not to piss anyone off enough until about two hours into the movie when they get kicked out. Everyone clapped as they left. Finally we're all enjoying the film. The movie ticks on and we're at the huge fight scene at the movie. We see a flame shoot across the screen, then on screen watch the film itself disintegrate. At first we thought it was a special effect then slowly everyone realized the actual film had caught fire and we weren't watching anything but a black screen. The movie theater quickly handed everyone several free movie passes but it was just such a let down. First the assholes, then not even getting to see the end of the movie that night because all their other theater rooms that were showing it were full.

/r/AskReddit Thread