[Fruitbat]

Solar showers can also be lengths of black irrigation pipe laid out in the sun - but I'm guessing from the heating the water in the microwave statement that it's pretty cold where Humane hails from.

In my old house the hot water system blew in winter and I was showering very quickly in cold water when it was about 5 degrees C but that's as cold as I ever want to shower - okay it was a dare from Mr Bat, but I won it and... well I won't tell you what my prize was, but I got to have my way with him... I think that was the last time he dared me too...