1. Damp hand towels
    Nothing worse than being at a party and going to dry your hands in the bathroom only to find the hand towel to be damp from the 50 other uses before you. 😠
  2. When someone comes out of a bathroom stall, they see me going in, and they still don't tell me there's no toilet paper. Really, db?
    Suggested by @slikvik
  3. People who leave their shopping carts wherever the hell they want to.
    Suggested by @debcotton