7) Slow walkers.
8) People who cannot respect other people's opinions. You may not agree with them, but then agree to disagree.
10) People who say that they hate their siblings.
12) People who say that they are fat all the time. I'm at the point now where I'll just say 'yup, you are' and walk away. Don't be fishing for compliments from me because you're not going to get one and I'm sick of hearing it.
15) People who stop in the middle of the hallway.