Tik Tok, what does the old plug mean?

1. Both Lao Sai and Xiao Sai belong to Hebei dialect, and they are both swearing words, meaning old private son and small private son.

2. In ancient times, children born to unmarried women were called illegitimate children, and they had no family and surname, so they were shameful children.

Even if he goes to school, he will be insulted by his peers and will be called an illegitimate child without a father. The illegitimate mother represents disobedience and immorality.