  writing letter 写信

  In a mand house, a mental patient was writing letter. Seeing this, the curious nurse asked.
  一间精神病医院中，某个病患在写信。护士看到了就很好奇的问他。

  Nurse: Who is you writing to?
  护士：你要写给谁阿？

  Patient: Myself!
  病人：写给我自己啊！

  Nurse: What are you writing?
  护士：那你都写些什么阿？

  Patient: You neurotic! How do I know since I haven't got it.
  病人：你神精病啊！我还没收到怎么知道？