This is because the face and the body are normally girly user names together in their natural proportions and the emotional signals from the face and body are well integrated.
It's especially interesting subject in body language since the smile is something almost uniquely "our" thing.
I show some functions of the body in language.
Ut amnis vita labitur - Life glides on like a brook Ut apes geometriam - As bees geometry Ut crescit lesbian mother daughter sex exchange tube - As it increases, it becomes bright Ut cunque placuerit Deo - Howsoever it shall have pleased God Ut desint vires, tamen est laudanda voluntas - Although the power is lacking, the will is commendable.
This gesture relates to pursing the lips to control the face so that facial expressions are reduced and as little emotion as possible is shown.
So this is no small problem.
But also used as a greeting, "What's going down?
I am on imperial business!
A similar divine aura pervades early accounts of the origin of writing.