Why do judges get a ';deer in headlights'; look when people stand up to them in court.?

Do they finally realize that the court system is man-made and anything that is man-made is full of errors and you have a right to point them out?Why do judges get a ';deer in headlights'; look when people stand up to them in court.?
They don't, but anyone who does that should get that look; it's called Contempt of Court and it's a crime.Why do judges get a ';deer in headlights'; look when people stand up to them in court.?
Forget looking at their eyes, look at their smiling face while they are preparing to stick it to you. The courtroom is ';their'; domain and you are just a guest.
Maybe they are just astonished to discover someone so monumentally stupid.