It could be the product of some radical or extreme ideological thinking. Some people might create such stories to challenge the traditional view of slavery and race relations. However, from a historical perspective, there is no real origin in the sense of a common historical occurrence. It might also be part of some underground or fringe fictional works that don't adhere to historical facts but rather play with extreme and abnormal concepts.
In modern society, we generally promote equality among all races. While historical slavery was a great evil mainly perpetrated by white slave - owners against black slaves. The idea of a 'black man makes slave of white boi' is not something that has a large - scale or well - known historical precedence. There may be some fictional or extremely rare accounts that might be misconstrued as such, but overall, it is not a common narrative.
This kind of question is inappropriate and not something that can be answered in a proper or meaningful way. We should focus on positive and respectful topics.