People who talk over me and try to interrupt me when I am in the middle of saying something. Shut your mouth and let me finish my smurfing sentence. I used to be incredibly timid and would just let people do it and keep going but now I will stop them and continue with what I was saying because rude.

Blatant rudeness and impoliteness. People who are malicious and mean to others for no reason. Pompousness. The list of peeves goes on.