Ooh, pub quizzes where the quizmaster insists they're right and refuses to check any answers that are queried.
We went to a quiz where the question was "What specifically is the name of the island group which includes Rum, Muck and Eigg?" We answered "Small Isles" and the answer was subsequently given as 'The Hebrides'. When we queried it with the QM, he responded with a bit of a patronising sneer "Well, yes, of course they are quite small isles, but they're part of the Hebrides, so that's obviously the answer." No amount of explaining to him that they are specifically known as and officially referred to as the Small Isles would make him even agree to Google it. He'd even said 'specifically', by which we would have assumed that 'Hebrides' would have been too vague. I assume he was meaning more specific than 'Scottish'! It's the equivalent of asking where you would find Stevenage, Hatfield and Tring and accepting 'England' but NOT 'Hertfordshire'.
Another one, even longer ago, had a music round, asking for the title. It was Smokey Robinson and the lyrics played "So take a good look at my face/You'll see my smile looks out of place/Look a little bit closer, it's easy to trace...." We put 'Tracks of My Tears' and were informed that it was actually 'Tears of a Clown'. The QM even accepted that it was wrong, but that's what he was going with as 'that's what the answers say' (of his bought-in quiz). We lost the point, but people who'd recognised it was SM and just guessed at his best-known song DID get the point.
On another occasion, when I was at primary school (I forget what age), we had weekly spelling tests of 20 words with our teacher one year. I prided myself on my spelling ability and I only ever got one word wrong the entire year, which prevented me from keeping a perfect clean sheet. I'd been away on a family trades-based holiday for the week (with full permission - in the days when this was still allowed) and hadn't been in class when the words were given out to learn. My first day back was the morning of the test. The word was 'model', but in her accent (repeated twice), it distinctively sounded exactly like 'muddle'. Of course, I couldn't ask her to spell it(!) to clarify and it didn't occur to me at that age to ask for a definition. No amount of arguing that I had had no way of knowing what the words were and, had I known it was 'model', I would have 100% known how to spell that. She just insisted "But THAT was the word that was given out to learn". I was peeved (and still am, more than 3 decades later), but I never held a grudge at all - she was a really lovely, amazing teacher.