I'm sure Teach was impressed with that!
But I don't even have an Uncle Stanley!
This is what I think he must have meant. I take my clue from the illustration. You must agree that his artistic talents were evident even at the tender age of five. Obviously his writing skills weren't quite as developed though.
Barry's Uncle Stanley got third prize at Balmoral Show for his penis. It got a yellow rosette.
I'd love to have seen the chap who got first prize!