...is that the term "Negro Leagues," to a lifelong baseball fan, is an idiom, a stock phrase that you learn when you're learning about Satchel Paige and Josh Gibson et al. The words are inextricably linked, like they're all one word - "negroleagues" - so much so that if you played word association with me, "league" would invariably be my first response to "negro." Not even sure what my second choice would be.

Which means that someone like Kuiper would have had to deliberately divorce those words from each other in his mind, break that idiom apart. That's no slip; that's work. Damn.