Do you still remember the black pen that you used to do homework every day? Do you still remember the brushes and pens that were often used in calligraphy classes back then? Remember the correction tape that was often covered in book pages? Do you still remember the pencils and erasers used exclusively for science homework? ... If your answer is "yes", then let us recall the gay love stories that happened in our pencil cases in those years! (I won't tell you that I discovered this joke accidentally while chatting with my classmates!)