What are your BIGGEST pet peeves?

I have 3 major ones that drive me nutz.

I cannot stand drivers who pull up to a traffic light and leave 4 car lengths of space between them and the car in front of them. Do they realize how UNproductive that is??

Drivers who DONOT use their turn signals. Its so easy and makes driving so much more simple and safer.

And I think my biggest pet peeve is when parents dress their twins alike...God do I grind me teeth whenever I see this.
ITS NOT CUTE!!!!!