So I've been wondering lately, as we all do at some stage or another in our lives, why the rat face. What compels Chins to make herself even uglier than usual?
I believe the answer may be that she doesn't see herself the way we do. She thinks she's the most gorgeous creature on earth, and a silly, ugly expression only makes a beautiful girl more charming and quirky. Exhibit A: the duck-faced selfie.
The rat face is Chins' duck face.
To be fair, she'd probably also do the duck face, but it wouldn't really have the same effect, would it?