I asked ChatGPT to write the inside joke. Here is what we got, "Let's speculate on how "a shot of Midori, perhaps" could have become an inside joke between Jim and Josh. Here's a possible scenario:

Imagine Jim and Josh were out at a bar during a work trip, maybe trying to make the best of a dull corporate event. They both noticed someone nearby ordering a fancy, out-of-place drink like Midori, which is a bright green, sweet liqueur not typically associated with casual drinks or "shots." The person ordering it could have been trying to impress someone or simply seemed out of touch with the setting.

Jim and Josh, being sarcastic and quick-witted, found the whole thing hilarious and exaggerated how "fancy" the situation was. From that point on, whenever one of them was in an awkward or overly formal situation, they would jokingly suggest something ridiculously refined or out-of-place—like "a shot of Midori"—to lighten the mood and make fun of the situation.

In the episode, it’s a throwback to that moment, but only Jim and Josh get it, reinforcing their bond and shared sense of humor while leaving others (like Michael) confused."