people who bring babies to the movies then don't leave when the baby starts crying after an explosion. "yeah, good idea bringing an infant to a movie where bombs and bullets are blowing up planes and cars. jee, he started crying? what a surprise." then they got the nerve to stay there like it's not a big deal. hey lady, it's not my baby. get it the hell out of there.
when people slow down to watch an accident on the freeway, causing traffic that backs up for miles. because of your idiotic self-serving curiosity and tendency to feel good about yourself when others are in misery, i had to waste 30 extra minutes of my life on the freeway. oh what? you're doing it because you're concerned about the people in the car accident? so then, you got out of your car and helped them, right? oh no? then shut the hell up. loser.
(yeah, these 2 are real real big pet peeves of mine. i only have these 2 though.)