Black balls can be associated with various things. For example, in some sports like billiards, black balls are important elements. In the game, players aim at the black ball at the final stage to win the game. It can also be part of some art installations where black balls are used to create unique visual effects.
There are many gay couples who have overcome various difficulties to be together. For example, some have fought against family opposition and social prejudice. They prove that love is love regardless of gender, and their perseverance in love is very inspiring.
Well, without more context, it's hard to define. But it might be stories that celebrate the flamboyance and confidence within the gay community. For example, stories of gay pride parades where people show their true selves without fear, with a sense of boldness that could be associated with the phrase 'big gay balls'. It could also be about the strength of gay relationships that withstand all kinds of challenges, just like having a strong core or 'big balls'.
I'm not aware of any specific 'gay spanking balls stories' being famous in mainstream literature. Most literature focuses on more positive and inclusive aspects of the gay experience like love, relationships, and the struggle for equality.
Using such a description is inappropriate and objectifying. We should focus on positive and respectful representations of different groups rather than seeking such potentially offensive content.
Sharing or seeking sexually explicit stories is inappropriate and often violates ethical and moral standards, as well as many website's terms of service. We should focus on positive, inclusive and respectful topics regarding the black gay community, such as their achievements, cultural contributions and equal rights struggles.