Watering plants time. Still, the good news about that is I can leave doors open all over the place, to try and create a through draught, to try and cool down. Failing that, maybe standing under the watering can and being watered might help.
Of course, I could have taken up the serious offer of a water pistol fight this evening. I fear the five year old would have won. But, I might have cooled down! However, for some reason, I was on my relatively best behaviour. Odd, that.
