@codl "why the long face" is a stock phrase to ask why someone looks a bit sad, with a nuance of trying to cheer them, though i think it went out of fashion a while ago
-F
@codl i don't think "long face" is used outside that specific stock phrase
i would look at google ngrams to see if our thoughts about it being less common now are backed up by the data, but the problem is the joke is really common
-F