Patient: Doctor, doctor! I have a serious problem; I can never remember what I just said.
Doctor: When did you first notice this problem?
Patient: What problem?

病人：医生啊，我有一个很重要的问题。我从来记不得我自己刚才说了什么。
医生：你什么时候第一次发现这个问题的？
病人：什么问题？