Is a fortune telling song made popular as a nursery ryhme. It’s meant to tell the personality or future of the child, while teaching them the days of the week.
The child that is born on the Sabbath day
Is blithe and bonny,good and gay;
Monday’s child is fair of face;
Tuesday’s child is full of grace;
Wednesday’s child is merry and glad;
Thursday’s child is sour and sad;
Friday’s child is loving and giving;
And Saturday’s child must work for its living.
Childrens Nursery Ryhme
Check out Wikipedia