My internal examiner for my viva was a good, and we knew each other from St Andrews and I’d helped his group out with relocating there.
He told me that the academic regulations say that you have to enter and leave the examination room in academic dress, but didn’t say anything about in between, so I should feel free to make myself comfortable for the exam.
I assumed he meant to take off my gown and bow tie, but my enormously stressed out brain was screaming at me about how funny it would be if I stood up and started to take my trousers off.