"Rings."

[Verbavore]

I really like how you turn how different a circle can be drawn to how different people can look, and then twist it all up at the end to point out how meaningless it is. I wonder, could you be referring to how petty people are in basing judgements on looks/ the physical? Or how everyone is really the same inside? Or, how nobody matters, because we're all full of.... nothing? Each is a valid interpretation, which makes this one a winner!