This happened in a shopping center in France. There is a large baby changing room with a small toilet for toddlers. 9mo DD chose to do a poonami while we were shopping, so I took her there. The door was locked. I waited. And waited. And waited, while the poo was soaking through DD's clothes.
After 5 or 6 minutes, I heard the toilet flush. Then the door opened and a woman in her early 50s appeared, on her own. She gave me a contemptuous look and walked away.
The toilet for disabled people was about a metre away and it was free all the time. There were half a dozen free cubicles nearby.
Is there some sort of weird fetish I am not aware of? A medical problem that means you would need to use a toilet designed for nursery children?