"As I opened my locker, there it was again to remind me: the 'Shower naked!' sign. And to prevent all the Americans from cheating by simply “wetting their naked bodies” in the shower for two seconds to minimize their nude time, Iceland got even more specific with the showering requirements here. This sign came — in several languages — with a diagram of all the body parts 'to wash with shampoo' when showering: head, armpits, feet and genitals."
Iva Rose Skoch i Global Post om isländska badhus.