Progress bars often come with text that tells you what it's doing. In recent years, it seems that a lot of them stopped actually telling you what they're doing and instead give you a silly unrelated message (e.g. Panoramax would give me things like "Calculating Cornish sunshine", "Measuring the high tides", "Brewing tea", etc). Where/how did this trend start?
Edit: Thanks for all the responses! It looks like this is much older than I originally thought. I played SimCity 2000 as a kid, but at that age, "reticulating splines" just sounded like normal computer jargon to me.
SimCity 2000 (and many Maxis spinoffs) show the phrase "Reticulating splines" on the loading screen, which was probably not the first funny loading message, but the first one I think of. https://unsung.aresluna.org/some-rather-obscure-and-complex-mathematical-process/