Not strictly Class 1 but military aircrew medicals.
1. During my initial selection board, when it came to the preliminary medical I was shown into the office of one Surgeon Commander A*****n. For some reason we were sent in two at a time and the wanabe pilot shown in with me was a Petty Officer Artificer. A*****n went through our details and then asked if we smoked. I replied “No” but the other guy said “Yes”. “And what are you?” asked the Doc. “Petty Officer Artificer” was the reply. “No, what are you?” repeated the Doc. Again “Petty Officer Artificer, Sir”. “No you’re not” said Adamson,” You’re a c**t!”
So here I was again one year later, now Midshipman Gandalf RN, standing in front of Doc A*****n giving my details. Eventually he came to THE QUESTION. “Do you smoke?” What with all the pressures of Dartmouth I had started again so I truthfully replied “Yes sir”, “And what are you?” he asked. “I’m a c**t, sir”. A short silence and then “Have we met before?”
2. Much later at a well known Scottish Naval Air Squadron we had an elderly civvy doctor whose “audiogram” consisted of his sidekick sticking his finger in your ear while the doc whispered “Sixty six” and “Kilmarnock”. It was the same for every medical until some smartass said the words before the doc did!