Clarification

I was driving home Charlie and a girl who lives on the street after school today when a conversation started up behind me.

"Aye-aye, Captain!" says Charlie.
"Charlie, are you the captain?" asks Anna.
"Yes."
"Then say what I say, 'Aye-aye, Mateys!'"
"No. Aye-aye, captain!"
"Ok, then I'll be the captain. Aye-aye, Mateys!"
"I'm the captain!"
"Ok."

And then it repeated. All the way until we got home.

It took me until we got home to realize that I think Charlie believes he is saying I-I, Captain. So, when looking at it that way I can see how he could be confused.