"The hens were unaware of the heist. They had done their part: the shuffling around, the squatting down, the gentle plop! to release one perfect orb" Someone t

"The hens were unaware of the heist. They had done their part: the shuffling around, the squatting down, the gentle plop! to release one perfect orb" Someone tell me if i'm wrong, but I've always understood a "perfect" orb to be basically a sphere shape, so what's with this about eggs being perfect orbs?