It is a typical situation when men are suffocated by heat and steam and they went out to have some fresh air. It is common in Russia where is not prohibited nakedness.What you can not do is exhibitionism, walk with a hard dick, masturbate or bother women or people in general. Something very similar happens in Germany where nudity is not prohibited, although it is not allowed either. That legal loophole allows people, especially men, to walk naked in rivers, lakes, or even private spaces in their swimming pools to get in and out of the steam.