What's your Pet Peeve?

Pet peeves often involve specific behaviors of someone. These behaviors may involve disrespect, manners, personal hygiene, relationships, and family issues.

My pet peeve are insensitive people. Like people who doesn't care if their hair is touching somebody else's face when you are riding a public transportation like jeepney. It's when someone, or somethings, actions really irritate you and you just can't stand it. Also, I hate it when people are walking slow in a public place like in the mall or sidewalks. Hellow??? ain't they know that this is not their private place?? busy people are running! and it's irritate me really, people who are blocking my way!

How about you? what's your pet peeve?