Chinese/JapaneseEighth-grade sicknessThe feeling being unable to be understood because of one's self-perceived, false sense of depth, ability, or complexity.

[Borrowed from Japanese, apparently.](https://en.wikipedia.org/wiki/Chunibyo) Common among adolescents, but also present among a couple of Taiwanese women I dated. Basically, getting to know them is impossible because they claim to have "hidden aspects" to themselves that make them too complex to understand. Rule to the wise: If a woman can't reveal her "true self", it's because (a) she's a bitch, or (b) she doesn't know who she is.