Two Faced

Recently, one of my young cousins commented that she could tell when I was mad and when I was just playing by which side of my face I'd show while picking on them.
She told me that I'd look to the right (Her right or mine?) when I was mad, but to the left when I was faking it.

Maybe she was right - I never noticed.

But her observation reminded me of the Noh Mask performances of classical Japanese dramas.

Since most people have asymmetrical faces, are most of us somewhat two-faced?

Are those that are perceived as more healthy because of their symmetry (brought about by exposure to testosterone and oestrogen during development) better able to lie or worse?