Thanks (I think) Xena and Stealth.
It's called "the crumpet effect"
BINGO...she does it every time.
Well I've been a bit quiet and reflective for a couple of days - this is invariably followed by a period of on-heatedness! But I think you are cool people to share it with.
Its 4 in the afternoon here - which is the hottest time of the day for me.