What do you mean by fools and fools?

Idiot, usually refers to people with mental retardation, or swear words, synonymous with pets, or nicknames of people you like.

Why do you call a stupid person a "fool" instead of a "stupid fruit", "stupid bean" or "stupid dish"? Tracing back to the source, there is an interesting story. It turns out that the "melon" of "fool" is not the "melon" in "melon bean". In ancient times, the Qinling area was called "Guazhou", and people living there were also called "melon seeds". This man is honest and trustworthy, and can bear hardships and stand hard work. Whenever they are hired, they always work hard silently and never stop. In this way, people mistakenly think that they are stupid, and then call people who are not smart "melon seeds" and "fools". There is a saying in Ren Shutang's notes in the Qing Dynasty that people in Ganzhou (now Gansu) say they are not wise and say melon seeds. Another kind of "fool" means that two people in love call each other nicknames, which are similar to "fool" and "pig head". The word "fool" has been said too much, and no one has really asked what this "melon" is, whether it is cucumber, watermelon or cantaloupe. The origin of "fool" is related to a very ancient tribe-Jiang Rong. Fourteen years to the left technically explains the dialogue between Fan Zixuan and Jiang Rong, in which he said, "Come! Jiang Rong's! In the past, Qin people chased Naizu from Guazhou. " It means that the Qin people chased your ancestors from me and chased them all the way to Guazhou. Guazhou is in Dunhuang, Gansu Province today. According to the textual research of the famous historian Mr. Gu Jiegang, after Jiang Rong's family was driven out of Guazhou, people called people surnamed Jiang living in Guazhou "melon seeds". Because "melon seeds" are honest, they don't know how to be lazy, diligent and honest when they are hired. Because they have been regarded as "fools" by local people for a long time, they are all called "fools", and it is uncertain whether the meaning is derogatory.