今天下午，坐在教室里，刚想动手扯前排的长发，突然想起，我是来开家长会的。
呵呵，时间好不经用，抬头已是半生。
This afternoon, I was sitting in the classroom, just about to reach out and tug the hair of the girl in front of me, when I suddenly remembered—I’m here for a parent-teacher meeting.
Heh, how quickly time slips away. I lift my head, and half a lifetime has already passed.