A bath, it was, that I'd promised to give him in "about 10 minutes---wait for me, won't you? I promise I'll be there so fast, you wouldn't even realise that I was gone anyway."
But I never found the time to do it.
When I'd returned, about 40 minutes later, he was waiting for me in the doorway, throwing a party of a tantrum.
I named him: Little Hurricane.