Easter eggs are fine, as long as you hide them in a "non-work area" and not a "work area". In the 80s and 90s, on Macintosh, it was customary to hide easter egg

Easter eggs are fine, as long as you hide them in a "non-work area" and not a "work area". In the 80s and 90s, on Macintosh, it was customary to hide easter eggs in the "About" dialog box. Since nobody was relying on the about dialog to do real work, it's safe. An analogous place to hide easter eggs in a CLI program like Curl might be in the --help dialog. Nobody is parsing the output of `curl --help`, so it's safe.