Opening the door for people is one of my big things. What really bothers me is that normally when you open a door for someone they kind of grab it as well and hold it open for the person behind them, I hate it when the person you're holding it for just keeps on walking and doesnt do anything and you're stuck holding the door for 10 people. I had a friend that use to do this so I just started closing the door on her. Please and Thankyou are big in my book too. I just really hate rude people in general. People interrupting me is bad too. Bad manners is one of the only things that really makes me lose my temper at people.