The porn video tag "gay black men" indicates a scene involving two or more black men engaged in homosexual acts, which means they are having sexual relations with each other. In this case, the term "gay" is used to specify that the content features male-male interactions, as it can often be assumed that porn video tags focus on heterosexual activities by default. This tag would appeal to individuals who are specifically interested in watching or engaging with content that showcases black men participating in same-sex relationships.