The porn video tag "wife-first" is a combination of two elements: "wife" and "first." In the context of adult content, it likely refers to a scenario where a man engages in sexual activities with his wife as the first partner before moving on to other partners or exploring different sexual experiences. This can also imply that the woman in question is the primary and most important sexual partner for the male protagonist, highlighting the importance of their marital relationship in terms of fidelity and emotional connection