When we were kids, Dad used to say “And you don’t take a shower in the high street,” whenever we did something patently stupid. It became a family phrase, one of those private idioms that you take for granted between yourselves, but which raise an eyebrow or a question when used with strangers.
What I loved most about the phrase though, was how it made Mum laugh whenever he said it. She didn’t laugh much, and very rarely indeed at anything Dad said. That phrase, and whatever history had created it, sometimes felt like the glue holding their marriage together.