In Johno's weekly "what is it" last week. He stated that there is a misunderstanding of the word Thong (Sandels) between Aussies and Yanks.
I looked them up on Wikipedia. This what it said they are called in the U.S.
In the United States , they are generally known as flip-flops, thongs, and zories.
I knew them as Zori Thongs when I was growing up in the 60s.
Now a thong, to us (Yanks) is a swim suit or a thong bikini. They are nice to see on young women, but not so nice on obese people.