Isn't it obvious? Giant "codipiece filler" is stinking hilarious. And awesome. Partially because a lot of people expected it. Crono isn't usually seen as the type to beat up cats, but that's what makes it funny. Maybe he even got XP from it! Frankly, it seems like something that would be seen in lots of old cartoons.
Though I have to wonder... will that joke from the statue page raise any questions amongst the party when they meet Magus in his castle?