"Defiant Boyz" is a gay porn video tag, which implies that the content features male actors engaging in homosexual acts. The term "boyz" suggests a theme of youthfulness or young male performers, and the word "defiant" may indicate a rebellious or provocative atmosphere within the scene. This could mean the performers are acting out against societal norms or exploring taboo fantasies. Overall, this tag describes a gay porn video with an edgy and bold vibe, featuring young male actors.