It has been a thing in Japan for ages: https://en.wikipedia.org/wiki/Toilets_in_Japan#The_Sound_Princess https://en.wikipedia.org/wiki/Toilets_in_Japan#The_Sou

It has been a thing in Japan for ages: https://en.wikipedia.org/wiki/Toilets_in_Japan#The_Sound_Princess https://en.wikipedia.org/wiki/Toilets_in_Japan#The_Sound_Pri...