This porn video tag describes a scene that features three main elements: big tits, ass, and cock.
1. Big Tits: Refers to the female performer having larger than average breast size, which is often considered visually appealing in adult content.
2. Ass: Referring to the female performer's bottom or buttocks, another body part that can be considered attractive and stimulating.
3. Cock: The male performer's penis, which is a central component of most pornographic scenes.
In this context, the tag implies a scene featuring a woman with large breasts and an appealing rear end engaging in sexual acts with a man, highlighting these three physical attributes.