People in 250 countries often call fools or people who don't speak seriously, do things seriously, do things casually and make a fool of themselves "250".

The origin of 250 is because of the story of a king of China.

There is a saying in southern Fujian called "March 8th Festival". This is a swearing word, which refers to those who are not serious or whose behavior and language do not conform to etiquette and moral norms. March 8th still means "tortoise".

Two derogatory terms. Often used to describe stupid, mentally retarded people. Now it is often used to tease each other (there are many jokes).