I hope we all know what “going overboard” means; ditto, “high and dry” – both fairly self-explanatory nautical terms that are now part of our everyday language. Their nautical origins are obvious. But “hunky-dory.” Not quite so obvious, at least not to me. I will admit that I learned the origination of “posh” many years ago in a Stanford course on the history of the British Empire (port out, starboard home, referring to the preferred cabins, overlooking the continent, on the way to India). But here’s a fun look at other nautical terms that we use without thinking of what…