I once had a geography teacher who had the absolutely unhinged habit of asking spontaneous gotcha questions designed to make himself look good. The kind where the question doesn't contain enough information to get to the answer he had in mind. Then when someone answered the question correctly, but didn't use the exact answer he had in mind he went all "gotcha!".

Sometimes he asked the same question again and when someone remembered the answer, he still went "gotcha!" only with a changed answer.

The lesson I learned from that guy, was that sometimes a question says more about the person asking it than about the person answering it — more precisely that men with small egos bend reality to get the outcome they prefer.

The appropriate strategy with him was to ask in a Socratic way while stroking his ego: "But haven't you thought us X is Y? I would like to get it correct!", then he would squirm around and admit that yes, this is also correct.

This type of dynamic can also occur in interviews.