I frequently ask my wife What's up buttercup? In this instance, it is a term of endearment, like sweetie, honey, darlin', etc...and it is often used in place of these words. If someone said it in this context, that is probably all they meant by it.
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Osborn, MO. Sponsored Topics. Osborn is a city in Clinton and De Kalb Counties in the U.S. state of Missouri. The population was 455 at the 2000 census. The Clinton County portion of Osborn is part of the Kansas City, MOâKS Metropolitan Statistical Area, while the DeKalb County portion is part of the St. Joseph, MOâKS Metropolitan Statistical Area.