A year ago I was on a train from Italy to Germany, and I was assigned a seat in a cabin with 5 other people, kind of like the train from Harry Potter. I and almost everyone else in the cabin were using headphones to watch media, or reading a book. At one point, this middle aged lady pulls out her phone and starts watching something with the volume turned up, no headphones. I was going to ignore it if she only did it for a few minutes, but eventually like 10 minutes passed. So I unplugged my headphones, and started playing my movie at full volume and looked straight down at my phone. So now both of us were blasting some movie or tv show, while everyone else was getting annoyed. Eventually she turned off her sound, so I put my headphones back in. I realize I could have politely asked her, but as a foreign tourist who does not speak German or Italian, I assumed she wouldn't know English. AITAH?