Isnt the fake staredown that you would most likely **** on up lol?? Since thats the one you have to fake and force the anger??
Even though personally if you did have to fake something then a stare down is probably one of the more easier things to fake acting wise. Just clench your jaw and look pissed... hell im doing it right now.
I feel ya. I would just think a guy like him, who has been doing them for so long, could pull it off. Like you said, you just stare at a guy and looked pissed. No need to shake your head or twitch your eye.