I'm sitting in a lovely Chinese restaurant and there's a family sitting at a nearby table, engrossed in conversation whilst their kids are walking around the other tables, annoying people.
When I was a child, I wasn't allowed to leave the table without permission and, even then, it was only to go to the loo.
These parents seem oblivious to the fact that their kids are elsewhere. It's not the kids who are ill-mannered, it's their parents.
I did supress a giggle when one of the kids was waving his arms around and smacked his elbow hard on a table, ran back to his parents who completely ignored him. Still, they've been ignoring him all evening, so why bother now? Poor kid.