A derogatory idiom about learning.

Pretend not to understand, but pretend to be proficient.

Self-righteous. Always think you are right. Describe being subjective and not enlightened.

Think smart, think smart, express your opinions. Overestimate yourself and act subjectively.

Make people laugh: make people laugh; Generosity: originally refers to those who know the truth, and later refers to those who are knowledgeable or have expertise. Make the insiders laugh.

You don't need to understand clearly, that is, you only understand the main idea of the full text and don't pursue words excessively. Now it is often used in a derogatory sense, not specifically to describe the intention.