@smokey (that recent events reminded me about this reply of yours and my intent to reply back... well, yeah, what a wonderful world we're all building 😒)

The phrase was made popular thanks to the Queen Mother. I picked it up from a podcast of course.

Funnily enough I'm not bothered by the ambiguity. If anybody ever contacts me about it (ha!) then their approach would say a lot to me about whether the conversation is worth my time or not.