A more demeaning way of saying kid. This term is usually used by a younger person and directed towards someone of older age to make them feel like they are immature or childish.
James: Yo wth is your problem man, why did you kick me out of the room?
Moe: Relax Kiii, its just a game.
James: Dude, im 24
Moe: Watever Kiii