The head of a donkey is not the mouth of a horse
It means that the answer is not what you asked or the two answers do not match. The same as "the lips of a donkey are not the mouths of a horse".
Idiom explanation
[idiom]: the head of a donkey does not agree with the mouth of a horse. The same as "the lips of a donkey are not the mouths of a horse".
Idioms and allusions
[source]: Ming Dong said in the fifth chapter of the supplement to the journey to the West: "it's just one thing: it's not only beauty Yu, but also beauty Yu's head mate. If you ask for a moment, if the donkey's head is not right, you'll have to show your true colors."
Discrimination of words
When Chen Zhenggong heard these words, the donkey's head was not on the horse's mouth, and he was sweating. In Wu Jingzi's unofficial history of the scholars in Qing Dynasty, Chapter 52: Donkey lip is not the mouth of the horse, donkey lip is not the mouth of the horse
Chinese PinYin : lǘ tóu bù duì mǎ zuǐ
The head of a donkey is not the mouth of a horse
The difference between the two. mù bié huì fēn
To commit adultery in an ambush. tī fú fā jiān