SarahJane's story reminds me of my brothers' (twins) assessment for Edin Academy (this was 37 years ago so things may have changed ...)
They were interviewed separately, & both asked the same question: "what's the difference between a block of wood and a block of glass?"
T1 (serious little boy) came out saying "I said you could see through one, but not the other, I'm not sure I got it right"
T2 (cheery sort) came out saying "I said I had no idea!! It was funny!"
Both were accepted.