This porn video tag, "star-wars-clone-wars," is referring to a fan-made adult film that uses the popular science fiction franchise Star Wars as its theme and backdrop. Specifically, it highlights the Clone Wars period, which was a major storyline in the Star Wars universe involving the Galactic Republic and its clone army fighting against the Separatist Alliance. The tag is meant for fans of both Star Wars and adult content who enjoy seeing their favorite fictional worlds brought to life with an explicit twist.