Umm, I don't know about that. I've definitely heard 2 of my black friends disparagingly refer to other black people as uncle tom's within the last several years. That book, or at least tangential references, is apparently still in cultural memory. FWIW, this is the upper midwest, that slur might not be a thing on the west coast, I can't say.

For GP, based on the novel "Uncle Tom's Cabin" [1]. The book was abolitionist, but a quick read through of the wiki should give some background on why the title characters name is now a slur.

> https://en.wikipedia.org/wiki/Uncle_Tom's_Cabin

I'd imagine that GGP meant "ofay".

Correct.