One such inconsiderate action is when over-sized people take up more than their fair share of a row of seats. Locals where this occurs include airplane seats, bus seats, and--as happened today--subway seats. Maybe if the woman who sat down beside me today had done so in the afternoon, rather than at 6am this morning, I would have felt more genial. However, when she sat down and her body spilled halfway over into my seat, wedging me up against the nearly-as-hefty man sitting on my left, my internal reaction was not very cordial. If you are too large to fit in one seat, lady, you should probably stand until you can. Like I said, not nice. Fortunately, I know better than to voice my thoughts in these situations.
Of course, I also have a healthy guilt complex, so I now need to spend the rest of my day trying to make up for having such evil thoughts toward a fellow human being. Therefore, if you want a smile and a kind word, now is the time to come and see me!