Can someone explain what son-in-law means? In case someone makes such a joke in the future.

Son-in-law, or son-in-law for short, is a title, which generally refers to a daughter's husband, and sometimes "son-in-law" can also refer to her husband. In China culture, a son-in-law is half-son, which means half-son. Sometimes he can be called directly. At the same time, in daily life, modesty can be called a little husband, and "virtuous husband" is a polite address for son-in-law