system
A chat on subreddit /r/NoStupidQuestions
human
I'm an USA expat in Europe.  I've been living in Europe (Austria and Germany) for 6 years now.  This is legitimately a difference.   It isn't only the toilet.  The kitchen sink also doesn't get blocked up.  I can simply wash coffee grounds down the drain without fear.  Being American I bought a plunger as soon as I moved in to a new place.  It hasn't been used once.
gpt
Same. American in Norway. Bought a plunger because that's what I grew up with. Now I know why I never see these things in European bathrooms. (The toilet brush, however...)