Work-related:
-People who crumple up the credit card receipt that they need to sign and give back to me
-People who get mad when I ask them for their ID even though they KNOW I'm going to ask them, and who the fuck doesn't carry a license with them? No, I don't care if you have kids at home, that doesn't make you 18 or 21 asshole.
-People who talk on their phone when I'm ringing them up, and don't hear me when I ask if they'd like a bag, and then when I don't give them one they pause their conversation to ask me for a fucking bag.
-People who don't know what gas pump they are on. There are huge numbers on the pump. Look at it.

Life-related:
-When people are late and don't let me know they're going to be.
-People who turn reeeaaallly slow
-When girls wear those awful messy buns that flop to one side of their head
-Bad grammar
-When there's no food in the house.
-When clothing store racks are packed really tight so it's nearly impossible to see the different clothes (I'm talking about you, Forever21)
-People who don't read books because they think it's nerdy or something
-SCENE KIDS OMGGG I HATE YOU ALL AHHHH!!