No trick questions. No gotcha statements.
Your examiners aren’t in the viva to fool you or trap you, to belittle you or break you.
Your examiners are there to examine you. It’s in the name! They ask questions to start conversations; they have conversations to build evidence. They need the evidence to justify their conclusions and the outcome.
Trick questions wouldn’t help them get what they need. There’s no space for fooling you.