Noah? Perhaps Huck Finn?

The following is a conversation Joshua and I had right before he went to bed the other night.

One day, when I'm older, when I'm probably 6 years old, can we build a boat together?
A boat?
Yea.
What are we going to make the boat out of?
Wood.
I don't think I know how to make a boat.
That's ok, I know how.
You do? How do you know how to make a boat?
I just know how. I was just born that way.
Sure. We'll make a boat one day.

Then, he went to bed. After he went to bed, I started thinking about this...is he thinking a big boat we can ride on? a raft? a toy boat out of a chunk of wood to play in the creek with? I haven't asked yet but can't wait to hear the answer!