1.) When you tell someone to stop doing something, but they continue to do it, or do it even louder.
2.) When the TV volume is not on an even number, it either has to be even, or like 25, 35, or 45, anything like that.
3.) When somebody knows how to pronounce something, yet they pronounce it wrong on purpose.
4.) When someone leaves their cursor on the screen.
5.) Okay, I know people don't do this on purpose, and even I do it sometimes, but I just find it really annoying.
When you're walking down the hall, and someone is walking down that same hall, but the opposite direction as you, so you try to turn to get out of their way, but they end up turning too, so you turn back the other way, yet they do it too, and so on and so on.