"xl" in the context of a porn video tag typically stands for "extra large." It is often used to describe the size of certain body parts, such as penises or breasts, that are larger than average. This term can be used for both male and female performers in adult videos. For example, an actor might have an "extra large" penis or a woman might have "extra large" breasts. These tags help viewers find specific content based on their personal preferences or interests