[_0ffh]

That's infuriating to me, and I wasn't even the victim!

I'm so lucky such a thing never happened to me. The closest thing was a math teacher in middle school asking me about a problem solution of mine in a test, that he had marked "mysterious" (I had to come up with my own solution path during the test because I hadn't memorized the canonical one we were taught). He asked me to explain my reasoning, and when he was satisfied that it was sound he gave me full marks for the question.