What is the definition of "is"?

[rainmaker]

I'm hoping this will run to 10 pages, things are getting kinda tame (lame?) around here!

Exactly what is the definition of "facing", as in, "...facing the opponent" when establishing legal guarding position? Here's the only way I can make this question make sense. Here stand two players, A and B. They are "facing" each other, nose to nose, chest to chest, belly to belly and so forth. Now A rotates 90 degrees so that her left ear is toward B's nose, her left shoulder is toward B's chest, her left hip is toward B's torso. Obviously, A is no longer facing B. But here's the $64,000 question: Is B facing A? B's face and front plane are toward A's body, but not toward A's front plane. So is B facing A?