I describe a bit of the song “I am the Captain of the Pinafore” to Ezra.

N: “…and the ship that he’s the captain of is called the Pinafore.”
E: “Ships don’t have names!”
N: “They do. Almost all ships have names.”
E: “Is there a ship named Ezra?”
N: “Well, I don’t know one but there are many, many ships and they all have names, so I’m sure some of them are named Ezra.”
E: “How big are the ships?”
N: “Ships can be lots of different sizes. Some are giant, some are only big enough for one person.”
E: “Do the people on the ships name them? Do they like the ships?”
N: “Yes, I hope so, since they’re on them.”
E: “Are there ships in your mouth?”
N: “No, there are not.”
E: “I think there are!”
N: “Can you see any in my mouth?” (Opening my mouth)
E: “Yes. I see five ships in your mouth.”
N: “Oh yeah? What are the ships in my mouth named?”
E: “They are all named Ezra!”