I overheard this between two people a bit older than me, and thought: you know what… they may just have figured it out. Me being me, I rushed to the workshop to carve it in oak.
This is exactly the sort of message that raises a smile, and maybe even sparks wholesome conversations about the things that really matter. Leave a sign on the wall, or for something a touch more understated, set a coaster on the table.
Who knows, the odd husband might just decide to do their share of the house cleaning, and the other things that matter.
It's worth a try. And as we all know, if you carve it in oak it must be true.