Without wanting to turn this into a stories about Nigel thread, and believe me there are many, this is one where Nige was an the other end.
Due for an IRT the C&T pilot was asking Nigel various questions about IF flying, which, due to his encyclopedic knowledge, he got right. The C&Ter then asked him a curly one which he did not get quite right. When informed of this fact, without a missing a beat Nigel replied, "No, my answer was right, you just asked me the wrong question".
Still one of the best comebacks I've ever heard.