A practical catch for the unconscious, ignorant of anatomy, as old as humanity itself when I want to (a small child) convince him that he is lying, I squeeze the end of his nose, where there is no longer a nasal bone, there is soft, so he lies. but when I want to convince him that I'm not lying, I'll try to squeeze my nose at the top where the bone is ... I'm not squeezing, it's hard, I'm not lying. I'm lying now or not?