"Juicy-bubblebutt" is a porn video tag that describes a specific body type and physical attribute that many find attractive in adult content. The term "juicy" implies that the buttocks are plump, well-shaped, and visually appealing. A "bubblebutt" refers to a round and prominent buttocks, often characterized by an hourglass shape when viewed from the side or back. This tag is used by individuals who have a preference for such physical attributes in adult content, and it helps them easily find and categorize videos that feature these traits.