Mine's 5 years old and a treble national, but with britishness foremost.
Over Christmas we were in Bavaria. One morning at the breakfast buffet, I was helping him serve himself and asked him if he wanted any eggs. A whole crowd of people in the queue.
He asked in a loud, completely uninhibited voice, "Are they *ENGLISH* eggs?". I said no, they are German eggs. He said, "Then I don't want any thank you".
And a few minutes later, he did it again with my wife about the milk: "is it *ENGLISH* milk?"
We have no idea where he got this attitude from. It just came sailing out of the blue one day...