Does anyone have any specific memories of this? All public swimming baths have showers where people can wash their hair. I remember on one occasion there were a couple of children having their hair washed by one of the attendants in the old swimming baths near me which closed down (they may have been her own). A little girl stood on a step at the side of the showers having it done, with her hair in the most fantastic lather, & the attendant put shampoo suds on a man's nose for a laugh. Then a girl of about ten came, stood on the step & put her head forward as though she was having it done in the hairdressers.
Someone should probably report you. This is beyond creepy. Normally I'd just ignore posts like yours, especially on a site like this. But you seem to only remember things that have little kids showering. I'd advise you never post again.
Maybe not little kids, but still linked to showering. Carl Sagan (author of Contact) said this: "I can remember one occasion, taking a shower with my wife while high, in which I had an idea on the origins and invalidities of racism in terms of gaussian distribution curves"