Please, if you MUST take a huge backpacke on a packed commuters train, and if for some reason you are unable to put it on the floor - like any considerate person would do - at least stop turning from left to reght every minute and slamming everybody in the face in the process!
I mean, these people must know what they are doing for sure, and are pretending they don't realise just because they can't be bothered to change their ways.
AIBU?