Throw cats at eachother?
My brother and I used to toss cats at eachother all the time to piss eachother off, for fun, payback, etc. Not from a distance, and the cats weren't harmed....just sort of casually tossing or dropping the cat on the other person from a couple feet away so that the cat instinctively sinks it's claws into the victim and clamors to cling on, hurting the person.
It doesn't seem very normal, but maybe I'll be surprised.