The term "eipril" refers to a combination of two elements in the adult entertainment world. "EI" is short for "erotic intervention," which typically involves sexual activities with a dominant and submissive role play aspect. The "-pri" part might be a misspelling or typo, as it doesn't seem to match any known term.
The second part of the tag, "furry," refers to adult content involving characters or performers dressed up in animal costumes or anthropomorphic animal features. These characters can engage in various types of sexual activities, often with each other or human partners.
In summary, this tag seems to represent erotic interventions with furry characters or performers, where one participant is generally dominant while the other is submissive, and the scene may involve role-playing or costumes related to animals or anthropomorphic creatures.