I think it's just an example of how out of control you feel, though - they were talking about the strange mindset you go into when giving birth, completely different to how you normally are, and my cousin said the doctor stood next to her with his hands clasped behind his back and she became completely obsessed with the idea that he was hiding a pair of scissors in his hands and was going to do it, anyway!
I think it's terribly easy to get a fixed idea in your head about how things should work out and it can be hard to cope when they go completely 'wrong' = differently.