This porn video tag refers to a specific type of gay porn content that features scenes with large buttocks or "big ass." In this context, the word "gay" is used to indicate the sexual orientation of the participants. The focus of these videos is typically on male-male sexual activity, often involving one or both partners engaging in anal sex or other forms of ass play, due to the appreciation of big asses. This tag aims to identify and categorize content for viewers who enjoy this particular combination of large buttocks and gay scenes.