Personally, I find the term interesting.
The term "spade" historically has been used in a derrogative way to refer to black men.
And for a Queen of Spades to have a cadre of black men to service her, and her needs...
Speaks to me of the "Buck escapes from the BigHouse" mentality.
I've seen a couple of videos on here, where the woman says something like..."You going to make me suck this big black man dick?"...or "Make me take this black man dick."
I'm sure it means different things to different people, but an intelligent, well spoken black men isn't a sexual fantasy for a lot of women on here. Many of them just like the idea of some rough beast sexualizing them.
But it's the internet, we've all got our kinks.