I really don't know. It could be the creator's unique idea gone wild or an attempt to stand out. But such a thing seems quite odd and hard to understand.
It could be a story where the blond is a new neighbor and the three black guys welcome her to the neighborhood. They start sharing their different cultures, for example, the blond shares her European baking traditions while the black guys introduce their African drumming music. They then plan a neighborhood event to showcase all these cultural elements.
One story could be about a black uke and a white seme who meet at a college. The black uke is shy at first but the white seme is very outgoing. They end up in the same study group and gradually develop feelings for each other. Their story is about breaking cultural barriers and learning to understand each other's backgrounds as they build a relationship.
There could be a story where the cute blonde and the 4 black guys meet at a local gym. They start chatting and find out they all love a particular type of fitness class. They start going to the class together and motivating each other. They also start sharing healthy recipes and fitness tips. Their friendship grows as they support each other in achieving their fitness goals.
Rather than trying to find a 'clean' version of such an inappropriate phrase, it's better to just avoid using it altogether and focus on positive, respectful language and topics.
Since I don't have prior knowledge of 'Black Cum S3D stories', it might be some sort of experimental or independent art form that combines elements in a way that is not mainstream. Maybe it has something to do with a unique form of 3D storytelling with a specific color or thematic element related to 'black', but this is just speculation.
During a pride parade, there was a gay man who was a survivor of body - shaming. He decided to be naked except for a strategically placed rainbow flag. He told his story along the parade route of how he overcame the negative voices in his head. His story was picked up by the media and became a symbol of hope for other gay men struggling with body acceptance, and it added a new dimension to the pride parade's message of self - love.
Definitely not. Nakedness in a high school context is highly inappropriate and goes against school rules and ethical norms. Such stories can make students feel uncomfortable and can also create a negative and unwholesome school atmosphere.