What is JOI ... Abbreviation of Jerk Off Instruction (instruction to masturbate) in an established genre abroad. Make an indication to the M man (you) on the other side of the camera from the top with a line of sight meaningly and make it sharp just as you like. During the supplementary lesson, from a couple of female teachers and educational interns, surrounded by three people in the corridor after school, from a big busty new wife in the morning of newly-married life, a librarian while watching a slut in the library, during a hospital examination To a female doctor and a nurse. All five corners!