"gay-american" refers to a specific category in the porn industry. This tag indicates that the content of the video is homosexual in nature, involving male participants engaging in sexual activities with each other, and it is produced or features performers who are American or have an association with America. This could mean American-based production companies, actors, or themes related to the United States. It's important to note that this tag is aimed at adult audiences who understand and are familiar with pornographic content.