Have to add one (in light of the hellish day I had) -
People who gang up on you, make false statements about you, tell you you can't take constructive criticism (which wasn't constructive at all) and then act like they're 2 years old about it.
If you want me to learn something, don't tell me I suck...and don't go around acting like you're better. Be an adult, learn how to communicate and what the word CONSTRUCTIVE means, and then approach me. Until then, I will not talk to you or look in your general direction because you make me want to PUKE.
JERK-A$$