KS? That's not KS, noob..

what's ks, some of u may ask, simply put,it is a term used by gamers to describe a person's action of killing somebody else prey during the last hit.
but some people in dota say i ks their prey.. what a gang of jerks..
scenario 1:
i use mirana, priestess of the moon, i stun an enemy hero and one of my teammates go there and hit him a few times and i leap next to the enemy hero and use starfall to end his misery. is this call ks? i don't think so cause i launch the first attack so i claim my target, and the noob somemore say i ks. wth, he just went there to hit a few times and say i ks his prey..

scenario 2
i again use mirana, priestess of the moon. this time i stun an enemy hero(again). and then leap in and use starfall to kill him, but he still have about 200 hp left and one of my teamates jump in and hit him with a fatal blow, is that ks? yes!!! definitely, but he said i ks his one by "interupting" his method. wth, who stun the enemy first? who reduce his life to critical? who brave creeps to finish the enemy? me!! and the fellow still have the guts to say me ks? i have one word for him/her, go and f*** yourself before playing online games and read and use the term correctly.