"I'm a little tired of talking, buddy," I said. "How about you tell the story?"
"No, you have to do it. I'm not the storyteller!" he protested.
"But why not?" I asked.
"I'm not the expert!!"
Update: Later in the evening, he spied me getting set to push Henry around the basement in a little wagon & said, "Can I do it?? I'm the expert!"--before proceeding to bonk the little guy (gently) into a wall. Apparently expertise is a fairly vague concept.