Sun shower....

I have actually used one of these! When I was a teenager living in a small country town, the lake water was infected with toxic Blue-Green Algae. As it was our tap water, we had to use rainwater to shower with etc for a period of time. We had one of these and we would put it on the dashboard of mum's car for a little while, then hang it over our normal shower head.
I didn't look as happy about it as that guy though.
Via