People who walk and or ride in the street when there is a sidewalk.
If there is a bike lane, use it. If you are going to ride your bike in the street, please try and keep a decent speed!
People who talk to me while I'm reading or writing.
This one bothers me more than it probable should but I get so engrossed in my book or what I am currently working on! Reading and writing are two of my biggest passions. When I get in to a good book... you better leave me alone!!!
This is definitely my biggest one. We all make grammar mistakes, me included, but people who constantly misuse words and make other big grammar mistakes over and over again... please go take an English course at your local college.
What are your pet peeves?
Just me. That's all.