I know five...

when you stop being impressed by someone, you feel even more foolish, because you used to be impressed by them. And during that time, you felt normal about it.

The opposite is also true; when you start being impressed, you feel foolish for not being impressed before.
By the way, I'm not "impressed" by Хоро; I just like her. She's simply cute, and she's also a Wolf Girl, and sometimes she's even funny.