"Gay outdoor" is a combination of two tags, one being the genre "gay," indicating that the video features male-on-male sexual activity, and the other being the location "outdoor," suggesting that the scene takes place outdoors. The tag means that this porn video showcases homosexual acts happening in an outdoor setting, potentially in a park, on a beach, or any natural environment. It caters to adult audiences who are specifically interested in gay porn content set in an open-air environment.