The tag "i-need" refers to a specific sexual desire or need that the person involved in the scene requires or desires. In the context of a porn video, this could mean that one participant has a particular kink, fetish, or preference that they are seeking satisfaction for, and the scene is tailored to fulfilling that need. It's an indication that the content of the scene will cater to that specific sexual desire, providing viewers with explicit and satisfying visuals for their fantasies related to this theme.