In the olden days, toilets on trains were, effectively, holes leading directly between the human bottom and the tracks. In well-developed nations, these are uncommon—although they still exist in some parts of the world.
Using water to flush a toilet system is far more hygienic. But, as we can see from this TikTok video, there are potential complications. @neomoderneis shares what happens when a train toilet in Finland freezes over in the winter.
The background music is appropriate: “Let it Go” from Frozen. Well, if I must, I’ll straddle the ice-covered toilet and let it all go.