Pain Killer

放学前，老师把学生叫到办公室，拿出一粒止痛片说：“你把它吃下去吧。”学生不解地说：“我身上哪儿也不疼呀！”“过会儿就疼了。我已经把你考试不及格的消息告诉你爸爸了。”

Before school was over,the teacher called a student over to his office,and took out a pain killer and said, "You should take this."The student said in confusion, "But I don't hurt anywhere!""It'll hurt later.I already told your father that you failed the test."