Happy and Blue 2 asks the question - what is your favourite invention - and my answer was self-cleaning underwear.
Which, of course, doesn't exist yet.
But then I had a memory flashback.
There was this one time, on the telly, when I saw an item about Teflon-coated underwear.
That must surely have been a sincere attempt at self-cleaning underwear. Except having a Teflon on the inside of one's knickers doesn't so much clean it, as prevent anything from sticking to it.
Is that a good thing?
Now, if one were to do a poo or a wee, the stuff is just going to slide right off - where do you think it's going to go?
Once I knew a woman, recently arrived from China, who expressed disappointment at the unavailability in New Zealand of throw-away knickers. They don't sound at all comfortable, but I bet they'd be handy.