What might this be? Imagine a social gathering and someone, for arguments sake let's say they're American, says something disgustingly sentimental, emotionally expressive or just plain wrong. Do we react? Do we address the situation? Do we cause a scene? No! We stand stock still. Our insides knot and lurch with the excruciating pain and discomfort of it all, our minds bolt for the door. But externally we don't move a muscle.
If you think the genius ends there you're wrong. Because when this happens, miraculously everyone else in the room who's English spots it. Hard to say how as there are no outward signs of it at all. So ladies and gentlemen, all hail the English - the kings and queens of the static start.