People seem to say hate a lot here, so I'll try to mix it up. I am mildly irked when people don't take safety precautions, i.e. leaving an open stanley knife on a table, or not properly stacking books on a bookshelf. Like c'mon guys, it's not that hard! Also, little known fact but I once shot myself in the forehead with a spring-loaded party popper and a spiky tree pod, just thought you'd like to know.