Japanese enjoy their "onsen" (= hot springs)
and "sento" (= public bath) all over the place.
When non-Japanese people come by, they
not only give them a hostile look but also some
say " Do you know the "onsen manner"? "
which they think it's something very special.
It's basically, just wash up before dipping in
the water, but they talk as if it's the "king's rule"
or something.
Those ones who force you "manners" are the
ones that they smoke and drink everywhere
and spit in the streets.