Sometimes, I see a strange phenomenon on a certain person's face.
The person looks normal on first glance, but the next moment, his/her face is corrupted.
It's like a face in Picasso's painting. (More accurate example is the face from the "make-a-face game" - one of the traditional New Year games in Japan.)
The face is not actually corrupted, but I see like the above.
This is totally my own vision, but it decides my impression towards the person almost completely.
(However, I'll add one point; this "face" changes with time.)