Fun story: I made the exact same joke when someone was showing me a Japanese digital bidet toilet in a bathroom showroom. Turns out I was not the first one pointing this out, the guy told me with pokerface that most of these toilets have a sensor and the wash function only activates when it detects someone sitting on it. Also the nozzle retracts and its not exposed during toilet use and its disinfected with hot water automatically, so probably the water coming from it is just as clean as directly from the tap.

The more you know…

Also separate airports and train stations without people blinded by holiday brain.