Now here's a challenge. I quite often write a bit of a blog post when an idea occurs to me, then fill it in later. Thanks to Blogger's mobile app, I can do this anywhere, tapping it in on my phone. So I'll write a title and a couple of lines of text that summarize the idea, then fill in the details later.

This particular post started that way, but with a difference. All I wrote was the title. And I can't for the life of me remember what it was supposed to be about.

It certainly wasn't about the sensation you get when you pull a piece of dry skin off yourself, though I do find this strangely pleasant. (I still remember when, age 10, I broke my arm and after the plaster came off the entire arm was covered in dry skin. Heaven.)

Nor was it about the slightly related pleasure that comes from an unopened jar of instant coffee. You take off the lid and there underneath is that pristine seal, waiting to be broken through. For some reason I remember discussing this with someone I used to work with at British Airways (I don't suppose you remember, Sue), well over 20 years ago. We both agreed about the pleasure, but then discovered it was from a totally different action. Mine was to run the end of a spoon around the edge, crisply slitting it open. Hers was to attack it with a spoon, bashing dramatically through. (Freudians have a field day. But remember psychoanalysis has no scientific basis.)

So what did it concern? Junk food? The peace that sometimes unexpectedly turns up during the day? Cadbury's Whole Nut? I really have no idea. Perhaps you have some thoughts...