What does it mean for the Monkey King to become an idiot?

This is a popular joke on the Internet. Colleagues took their five-year-old daughter to the cinema to read The Journey to the West's article. When she saw the Monkey King become a human, she shouted: The Monkey King became an egg.

The most famous spell in Journey to the West is seventy-two changes, which can be said to be one of the most commonly used spells in the Monkey King.

The full name of the Monkey King Seventy-two Change is Dungeon Seventy-two Change. Besides him, Erlang Shen and Niu Wangmo also made such changes. In addition, there is another change, the highest day is 36, and Zhu Bajie is good at using it.