the first two in what, I'm sure, will be an ongoing list.
Not being able to find a specific page in a book fast enough.
In an argument, someone challenges you on a point. You assert it can be proven in, yes, THIS book. No matter how heated the other party is at your stance, they will never yell at you for not finding your proof faster.
Shaking your head at a strike during a baseball game.
Watching you, someone doesn't know if you are angry that the pitch was a strike, or if you are silently impressed with the pitcher's talent.