We all know that characters in anime have a huge array of facial expression to draw upon, right? Like, fear, anxiety, happiness, cuteness, whatever a normal person could display and maybe even more. There's one, however, which I've encountered many a time and have no idea what is called. Due to my everlasting curiosity and because it'd be a great asset in my writing, I want to know what it is called, and I hope someone out there could find me a good name for it.
Here's how it looks like:
Basically, it's some sort of reaction to another person's overreaction/stupidity. And forget the subtitle; some other character is saying that.
If anyone could help me out here I'd be very happy.
(for reference, it's approx. 3.5 mins into ep. 12 of Ouran High School Host Club)