My pet peeves are as follows:

Drivers who cut you off to go SLOWER than you. You can speed to get in front of me but can't go faster while in front of me? GTFO
People who have zero patience
When I ask my BF to do something the first time and he doesn't do it, so I ask him again and he accuses me of nagging him.
WTF? I'm not nagging you, I'm reminding you because you seem to have forgotten.
When my BF wakes up with a boner and looks at me. Um, are you expecting me to do something about that shit at 7AM in the Got Damn morning?
Girls who are overweight and wear skinny jeans-all that does is squeeze your shit and make your ass look indented.
When people call me to chit chat on the phone. Look, you know I barely have time to take a shit, let alone yap on the phone about nothing. What is wrong with you?
People at work who only use half of the mini-moos for their coffee and leave the rest sitting there for someone else to maybe use the rest. Throw that away, no one is going to walk up with their coffee and put a half opened mini-moo in their coffee, and all it does is force ME to throw it away.
People that give me shit for eating healthy or caring about my caloric intake. Yes, I know I am thin why do you think I have the body you want?