The porn video tag "indian-gay-uncle" consists of three elements:
1. Indian - This refers to the cultural or ethnic background of the participants involved in the scene. It indicates that the performers are from India or depicting Indian stereotypes or themes within their performance.
2. Gay - This specifies that the content features male-on-male sexual interactions, implying a same-sex encounter between two men.
3. Uncle - In this context, "uncle" is likely used as an age-related descriptor to indicate that one or both of the performers may be older or playing the role of an uncle. This term might be used for its humorous or playful connotations in the context of the scene.
In summary, this tag indicates a gay porn video featuring Indian men with an emphasis on age difference or role-playing.