Because the main material of barbecued pork is pork, the word barbecued pork also has a derogatory meaning of "stupid, fat". Moreover, some of them have been raised obese by their parents and processed and packaged, which means a little "second ancestor". Around 2007, the word barbecued pork clan came into being and became popular on the Internet.
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Take Cantonese as an example. The popular lesson for parents to naughty or low-motivated children is: "It is better to have a barbecued pork than to have you", which means that it is not as valuable to the family as a barbecued pork.
Because this is mostly from the mouth of parents and elders, barbecued pork belongs to a group that relies on parents but violates their expectations, even worse than the neet. Barbecued pork refers to a group of teenagers who rely on their parents but are not filial to their parents, doing nothing and making no contribution to society.