Further on stackability of cats

[desperance]

I was just sorting myself out downstairs, getting ready to go to the library, and there was this strange scritching sound behind me; so I looked around, and there was Baz perched on top of a flat piece of cardboard and scritching at it. The end he sat on was flat to the carpet, the other end stuck up in the air, there was clearly something underneath it propping it up; I said, "You haven't got Mac underneath that, have you? ... No, clearly you haven't," I went on, "because if you did he'd be fighting back, because he's evil..."

And at that precise moment Mac emerged from beneath the table where I stood, and deliberately slithered beneath that flap of cardboard, so that of course Barry biffed at it, and of course Mac fought back, and there was fighting and biting and chasing and chaos. Because he's evil.