It boggles my mind that people think it's acceptable to play music out loud through their phone speakers on public transport. It is SO SO RUDE to take up people's aural space like that. If I started blasting out opera at top volume they wouldn't like it, would they?! Do they think that sound magically doesn't travel beyond their seat, or do they just not give a damn? It's not like headphones haven't been invented! Seriously, how do people think this is OK?
I'll be honest, I very rarely say something. Mainly because I'm a coward. Also because it enrages me so much I don't trust myself to be polite. What would you do?