1. You can never wear white — for reasons both practical (mud) and historical (it’s English).
Unless you’re a Jack, in which case you need to have a word with yourself…
2. Once you know someone’s nationality, you have a pretty good idea what they’re going to ask you.
If they’re English: “Do you speak Welsh? Do you like sheep?”
Answer: “Yes, your mam’s a sheep.”
If they’re Australian: “You’re shit at rugby mate?” (Upward inflection makes every Aussie sentence a question.)
Answer: “George North.”
If they’re American: “Is that in England? Do you know the Queen/Prince?”
Answer: “No and yes of course, but my pal William deserves his privacy.” (Unless they’re really attractive in which case: “I AM A BLOODY PRINCE!”)