The verbal structure of this phrase points all emphasis onto the meow of the cat. It begs more understanding of exactly what that meow is. What does it mean? What does it look like? Because such importance has been placed upon it verbally it makes sense to translate that verbal importance to an idealized visual. And once we see an idealized meow, it follows that the cat doing the meowing is also theatricized—not just any regular cat, but a cat befitting a larger-than-life meow.