GBP/USD is called ‘cable’ because the first physical connection between London and NY was a cable between banks establishing an exchange rate for the time. The Irish pound versus the USD was called the ‘wire’, as it was a smaller version of a cable. The EUR/USD is called ‘fiber’ in many retail spaces as it’s a German version of a cable.
But now to the Kylie, which is a reasonably new one to me.
AUD/NZD= Aussie/Kiwi = Australian bird = Kylie.
I never promised it was going to be an educational day 🙂