I like efficiency, so pretty much anything that slows me down is a pet peeve:
- slow walkers on the sidewalk, or groups that aren't paying attention, and are just meandering around
- On an escalator, anyone that doesn't obey the "stand to the right, walk to the left". I have very irrational anger over this. I fantasize about just shoving people sometimes. I need help.
- On a train or bus or elevator, people who stand at the doorway instead of moving in. I fantasize about shoving people here, too. I think I need to go to more yoga.
- When driving, cars that basically swerve to the right in order to take a left turn, blocking as much traffic as possible. Really, anyone blocking my lane is a pet peeve.
Aside from efficiency-related things, I have a major pet peeve about people not trying things. People who say they "don't like apples", for example, but haven't eaten an apple since they were 3 years old 40 years ago. Or say they don't like something that they've never tried is even worse. You've never tried it! You can't "not like it"!