Move up , Move up

Why is it that people get on the train and STOP!!! Dead in their tracks as if thats it "Im on, fuck everyone else" they can then proceed to open their new paper and take up the space of about 4 people. I have a very large diamond topped victorian hatpin that I am going to be sticking into people very hard this winter. The great thing is you can jab right into someones leg and pin it inside the jacket before they even know whats happened.