I hate people who don't pay attention to how their actions are affecting others. For example, the people at WalMart who will go through an aisle and stop in the very center, not giving enough room on either side for people to pass by. Then it's somehow a surprise to them when they turn around and they've backed up traffic to the end of the aisle. Also, people who get on a bus when it's standing room and stop in the middle when they KNOW there are a lot more people that need to get on. Then they either reluctantly inch backward as more and more people either shove them over or tell them to move, or they stubbornly keep their grip on their pole, forcing everyone else getting on to squeeze by and fill the back. Such jerks >:-(