By the way the rest of the (actual) saying that is the title for the Swedish book is "Only Bad Clothes". In Swedish it rhymes [1] which of course increases its power. I know it from when I was a kid 40+ years ago, and I think both my kids would recognize it or at least get the meaning.

That being said, obviously mobile phones etc are huge and (in my opinion) problematic among kids here, too.

[1]: https://www.reddit.com/r/Svenska/comments/vj2630/no_such_thi...