wow that's super creepy. thanks - i learned something today lol.

tldr:

When we smile, a genuine happy smile, there will be symmetry of emotion on the face even though our faces are not in and of themselves symmetrical. So even though both sides are slightly different, true emotions will be seen equally across both sides of the face—in essence, emotional symmetry. In other words when we are either truly angry or truly happy, both side of the face reflect that emotion.

However, oftentimes, when we are experiencing multiple emotions at the same time or when there is an attempt to hide an emotion, we are betrayed by the emotional asymmetry of the face—what I call facial chirality (pronounced ki ra li ti). Chirality is a term that comes to us from the Greek language and is used to describe two objects that may appear identical but when folded over onto themselves they are not symmetrical.

Animosity, anger, fear, as well as other emotions, appear freely on both sides of the face as we truly experience them. However, when there is suppression of these emotions, when there is an attempt to beguile others as to how we really feel, or there are hidden issues or feelings, oftentimes, we see that emotion displayed only on one side of the face and not the other. The fact that we are seeing a chiral emotional display should serve as a warning that something is wrong.

Careful, don’t get too close to it.