I admit to being shocked that such a common phrase isn’t widely understood, but this site has plenty of international traffic so I can only say thanks for the context comment. :)
Yeah, it's funny how our contexts shapes what we believe to be universal :) I had the same experience with "ground floor" and "first floor", where seemingly every country has a different understanding and way they use those. Or even what "Caravan" actually is seems to differ too. Language is fun :)