As The Village Voice pointed out at the beginning of this 2004 story, O, You Cosh-Boned Posers!, you've been getting their work for a while now. Flarf is "A kind of corrosive, cute, or cloying, awfulness," mashed-up word absurdity.
You've got the definition.
But what does it mean? All I know is that my my ninth grade English teacher would be appalled. There is no diagramming this.