While I'm not the most careful person in the world, I'm also not the most incautious; I think it's probably not an uncommon experience for people who do regularly ride trains--e.g. those of us living in big cities where you commute by train instead of your car--that you sit and you realize you're sitting on your coat in an odd way that's got your phone in the pocket underneath you where you're sitting.

I mean, at some level, come on and use your imagination. People riding the metro don't always have total control over getting their belongings situated properly when the train's packed and there's a lot of bustling around. I assure you this experience is not unique to me.