Kittenstompen (catfinition) (German) – the forceful application of paws to a human’s kidneys or other vulnerable anatomy.

In use: “He said, “Sometimes, in the early morning, a cat decides that I don’t need any more sleep, and then there’s what German-speaking housecats call kittenstompen, which is the forceful application of paws to a human’s kidneys or other vulnerable anatomy.””

h/t to Thomas Weaver, North of Andover