Thanks, but that doesn't really answer my question. It demonstrates that it is a thing in America, but for it to be an exclusively American thing I would really need some confirmation that it is not widely used in other places. Cheers for whoever downvoted, would love to understand why asking a question gets a downvote?
For another data point, I'm in Australia and with quite a lot of medical contacts (my wife is a speech pathologist, sister an anaesthetist, and have friends who are nurses), I've literally never heard the term until seeing this HN title either.
