When I was at school, I used to get anxiety dreams in which I found myself sitting tests for which I hadn’t prepared. Usually, I’d also be naked.
When I was a student, I used to get anxiety dreams in which I turned up to exams only to find that I’d forgotten that they were open book and that I was naked (this actually happened to me in real life – the former and not the latter, I should add).
Now that I’m a lecturer, I get anxiety dreams in which the students turn up to the exam, only to find that I’ve forgotten to set the paper. Still naked, though.