I try to manage my expectations in life- but sometimes certain things annoy me so much, I can't help but get pissy about it. For instance, people that are lacking in the manners department? Why? Where did you come from? Go back there.
For instance, impatient people? Daggers! It reminds me of this crazy video I saw of a group of people jamming themselves onto a train in China. I can't believe that the wait was so bad that they would tolerate this type of behavior. Next time someone is in a rush, I'm just going to let them go ahead of me. Why not?