Just witnessed an exchange on the train. I was sat opposite a lady who had her backpack on the seat next to her. We were sat at a table seat. A man got on the train and asked if she could move it so he could sit down. Train was busy but there were a handful of other empty seats.
Woman umms and ahhs and says well, I have a lot of stuff in it. Man says please. Woman clearly doesn't want to move her bag and says can't you sit somewhere else. Man then starts to get annoyed and says I have paid for my ticket, you can't take up 2 seats. If you don't move your bag then I will.
Woman huffily moves the bag onto the table and says you could have just sat somewhere else.
Who do you think was BU? I have to admit I do get the rage when people leave their bags on seats but I guess he could have sat elsewhere.