Cato don’t believe in fake physics
Quick googling found this:
You can easily get the same effect just from the image frequency of the recording itself, since a camera works the same way.
One case where you can often see this effect in film is on spinning wheels. Pay attention to car wheels on camera. Sometimes they will appear to spin far too slowly, or even backwards.
@stux turn off the light and see of the cat plays with they downward stream.
Cats will sometimes bat like that at normal looking water drips