Some of the PPs remind me of my worst-ever boss, who furiously and correctly accused me of 'dumb insolence'. That's also a serious offence in the Armed Services, not in civvy street. So I proved his point by respectfully informing him I was sorry he felt I hadn't followed his instructions correctly, and could he explain further?
(This would've been no fun if he was just thick, but he knew what I was doing so it amused me for a while.)