“Can I flick your face?”
John’s fucking defiance in the face of humiliation and abuse gives me life. There are people he cares about on the line, so he knows he has to hold back the full force of his rage, and he does. But no one can steal the fire in his soul, and the withering and defiant look he gives Magnussen here. He still has that.
I would bet any amount of money that this isn’t the first time John has been in this sort of situation.