My internal examiner had a quirky sense of humour. At the end of the viva I was asked to wait in my office while the two examiners had a discussion without me. I got some water, paced a little then sat at my desk.
“Nathan,” said my internal ominously, “It is time for your sentence.”
Without missing a beat he started off down the corridor without me.
As I followed him I was 99% sure that his pronouncement was a stab at humour. I was sure I had passed, because I felt sure no-one would say it is time for your sentence if they were about to tell someone they had failed.
Remember: your examiners are there to come to a decision, but it’s wrong to think of it as judgement, or passing sentence. They’re making an award. They’re recognising what you’ve done and helping you see what you need to correct for the final submission. It’s not a trial, it’s an exam.
The picture of the viva you carry in your head will affect how you feel about it.