Oh... I just assumed because some of the lines and parts of the story are so very cheesy and the whole thing with the cat just seems like a joke to me.
It's really satire of the cliche action hero with a few twists here and there to maintain originality. The puns for instance are supposed to be comical in the sense that he makes jokes out of things that clearly aren't a laughing matter sometimes, much like the original Batman. The cat was used mainly because at the time of it's creation the contest, that I spoke of earlier, required specific lines; In this case "That's nice, but I'm more of a cat person" So I decided 'Why not make the cat both Jack's sidekick and a weapon' plus I'm so much of a nut that a flailing cat is humerous to me. In the end though it will have pseuado-serious aspects.