When is a doctor most annoyed?When he is out of patients.

问题描述:

When is a doctor most annoyed?When he is out of patients.
Help me,please!What's the meaning of the second sentence?

well ,this is a pun
it means when he has no patients or when he is impatient
这是个双关语
意思是,当他没有病人时,或者当他没有耐心时.
这题利用patient 的两个意思(病人,不耐烦,没耐心)表达其用意,应该属于脑经急转弯的题.