With a little prompting from my other half, we got the following out of him:
Once upon a time, there was a princess. And the princess was called Princess Daddy.
Princess Daddy wore a white and pink dressing gown with little hearts on.
Yes, he does. In my defense... actually,scratch that. I have no defense.
Princess Daddy likes eating peas.
Princess Daddy went on a blue and white boat, and sailed through the clouds to the sky!
Then he had a wee.
The End.
He's got a bright future as an awesome storyteller ahead of him.