1) People who lie persistently even when you've told them you know they're lying - leads to much anger.
2) Said anger forcing you to say/do things that are out of character and you can't undo.
3) People who ring their mobile phone company and don't know their fucking phone number then get angry with me because they don't know it.
4) People who say 'can I speak to someone who knows what they are doing?' Cheeky cunts.

Grrrrrr

Your turn, GO!