While Redditisms leaking into HN comments are usually downvoted, I actually got this for the first time just now. Probably because while on HN I wear my thinking cap, and on Reddit I read mainly for amusement and don't spend the time to look as closely. So a qualified thank you, that was clever.

It was popularized by Douglas Hofstadter, the guy who wrote Gödel, Escher, Bach among other things. https://en.wikipedia.org/wiki/Douglas_Hofstadter