Is your mama a llama?

"Is your llama a mama?" I asked my friend dave. "No she is not" is the answer Dave gave. "She hangs by her feet, and lives in a cave. I do not believe that's how llamas behave." "Oh" I said. "You are right about that. I think your mama sounds more like a bat!"
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If you have read that book, you will get cookies from me.

I was testing an MS paint and gimp combination, and I couldn't get that verse out of my head.