What is your most horrible movie theater experience?

I don't think my experience is bad, but here you go. It's in one weekend, I go with my friend to watch the new movie in my country. The queue is so long and we got separate seat after queuing for one and half hours. Ok that's ok for us since we're going to focus on the movie. I got the seat at the back of the theater, but when the movie starts, what do you think was happened? The couples in front of me started to create another "movie" And finally after the movie ends, I watched 2 movies at the same time so I missed some part of the movie.