So it's legal to piss in a policeman's helmet if you are pregnant. I'm glad to see this confirmed as I heard this factoid a few years ago and have occasionally pondered its veracity ever since...

A few years ago, I was indecently assaulted, and on my way back from the police station I asked the affable policeman who was driving me home if it was indeed true that a pregnant woman in need of a pee could ask a policeman for the use of his helmet. How could I miss the chance?

He didn't know, and had never heard of the factoid before, and laughed quite a lot at the thought.

I hope he also reads the story and remembers me asking him about it.