You can summarize io9’s list of things you must never do when watching TV to one simple rule: shut up and watch the bloody movie or leave. However, let’s get specific because you really don’t want to be a douchebag and be hated by everyone, right?
https://gizmodo.com/im-trying-to-watch-my-tv-show-and-youre-being-a-war-c-1462776424