What are the jokes that need some cultural knowledge to understand?

The paragraphs that require certain cultural knowledge to understand are as follows:

1, the French youth asked the Zen master: "My ex-girlfriend has a new boyfriend, but I still can't forget her and can't let her go. How can I break them up and have her again? " The master chuckled, "What can you keep in this world?" The young man said thoughtfully, "Business does not break the lease."

2. The French youth complained to the Zen master: "My girlfriend's father thinks that I am short and poor and won't let his daughter marry me. What should I do if he wants to marry a Gao Fushuai man? " The Zen master smiled and replied, "If your girlfriend really loves you, you don't have to worry. Is there anyone in this world who doesn't want to make such a decision, and others can help him? " After a moment of meditation, the young man replied, "I see the agent."

3. "Husband, I can't sleep. Tell me a story. " Husband: "All right. A long time ago, there was a young man who worked in a procuratorate. One year, he decided to take the judicial examination.

Examined jurisprudence, legal history, constitution, economic law, international law, private international law, international economic law, criminal law, criminal procedure law, administrative law, administrative procedure law, civil law, commercial law ... "Before he finished, his wife fell asleep.

The next day, my wife lost sleep again, and my husband said, "Civil law includes property law, guarantee law, contract law, tort liability law, marriage law, inheritance law ..." Before the topic was over, my wife fell asleep again. ...

4. The law professor preached in class: Students, in this society, major cases depend on politics and metallurgy, middle cases depend on influence, and small cases depend on relationships ... Before the words were finished, a classmate suddenly dropped his textbook on the ground: When will I stop studying law? The professor pointed to the books on the ground and said meaningfully, I think you'd better pick them up. I can tell you responsibly that I will definitely study law in the final exam.