Speaking of toilet business, I was going home one Saturday night on a Desiro and there must have been a football match on, as there was loads and loads of rowdy angry males throghout the train who had clearly had a little to drink, some a bit too much perhaps.
It wasn't a nice environment to be in and the worst bit was yet to come.
I was walking down the train to the nearest toilet, it was one of those PRM round shape ones and I pressed the button to open it, as it didn't say it was engaged and if it was then the door should've been locked.
In short, it wasn't. Some half drunk muppet had forgot to press the lock button and I got the almighty fright of seeing a drunk middle age guy sitting on the loo!

Safe to say, I averted my gaze immediately and quickly moved to the next unit to try and find another toilet!
What is it with people getting so drunk they can't perform basic functions like pressing a lock button, eh?