I don't have too many as I am mostly a laid back guy, but here they are...
-sleeping in (yes even on the weekend)
-flat pop *it doesn't take that much effort to tighten the top!!!*
-people who hate kids
-people who don't take care of their kids or pets
-people who say they are going to sell you feeders and then don't reply to you for two weeks after you send them the money