Can't remember if I have said this before, but always for a good anecdote.
A few years ago, I was at one of those meeting in a large field. There were portable toilets laid on in the form of two vans, one for male other female.
Anyway, the female one had a long queue. the male was barely being used. So I suggested to the women that if they didn't mind, they could use the men's stalls, since they were unused.
It was quite surprising how many men got upset. Shoe on the other foot sort of thing. But once the women had started, there was little anyone could do about it.

OK, so I shook the tree a bit. I'm sorry. I was just trying to help. <hangs head in a good act of shame>