He hee! It's mid-winter here (and raining today) so the type of footware you are discussing is not seen here just at the moment.
And a warning note for anyone considering a visit down this way. "Flip-flops" is not the term we use - we call them "thongs". I understand that usage can cause confusion and mirth amongst some of our visitors!
So when your Aussie host invites you to the beach, and tells you to bring your thongs and your towel, just remember he's talking about footware, ok?