Empty like a worm

I spent the day packing and cleaning.

"I want you to admire the vast emptiness that is in the craft room," I informed Jonathan.
Meg piped up, "It's empty like a worm!"

Jonathan and I looked at each other, nonplussed.

"I don't know what to say to that," I said.
Jonathan asserted, "No, it's empty in a way that worm is not."
"Then how IS a worm empty?" said Meg.

"I know very little about how a worm is empty. My knowledge of worm emptiness is purely that of the via negativa. 'I thought it best to warn you, my dear Theophilous, not to empty your soul in the way that a worm is empty.'" said Jonathan.

Meg decided that made sense, or possibly no sense, and took a different tack. "You're right. A worm doesn't have scraps of paper or a door in it. Or a lamp or Bismarck in it. Also, the worm is not empty forever!"