The porn video tag "black-bbw" has two main components:
1. "Black": This refers to the ethnicity of the performers involved in the scene. In this case, it specifies that the participants are Black or of African descent.
2. "BBW": This is an acronym for "Big Beautiful Women." It describes the body type of one or more performers in the video as being voluptuous or having a larger-than-average body size.
In summary, this tag indicates that the porn video features Black performers with a BBW body type. This tag can be used to help viewers find content that specifically fits their preferences for ethnicity and body type.