War is about four guys in high school, all trying in their ways to be men. But since none of them really have any idea what that means, or how you're supposed to do it, they really screw up. They're disconnected from themselves, and everyone around them because they've been taught, as part of "being a man," to be aggressive and invulnerable. Part of that disconnectedness is how we use language to reduce, disparage, and control others. So, Dennis Foon invented a slang for the characters to speak, to point at the way we use words as weapons.