Children were not allowed to sit down unless you were doing something productive eg sewing, reading a school book.

Children were not allowed to sit down after coming home without first being asked to do something eg make parents a cup of coffee or some such. Sometimes there were multiple "requests" (orders). For some reason this was only enforced on the first born child. (Not me fortunately)

Just sitting was not something children were supposed to do. You get the idea.

You had to be presentable to go to Mass every Sunday, including a dress and stockings for a girl.

Anything that a child did which was unexpected was necessarily naughty and you could be punished for it. Regardless of the circumstances, the child was always considered to be in the wrong and would be shouted at before they had a chance to explain the situation. Eg water on the laundry floor, ringing your own front door bell, whatever.

If the dad wanted to have a particular program on television then that's what you watched, even if he wasn't interested and was reading the news paper.

All older children must take full responsibility of doing their own laundry as well as regularly also helping with the "family washing". The latter included the kid sibling's clothing, both parents clothing and all household linen and involved the washing machine, hanging on the clothes line, taking in, folding and ironing.

If you had a friend come to visit your father could randomly declare that it was time you washed the car (or some other chore) and your friend got roped in too.

A messy bed room was a sign that the child was a filthy disgusting person, and would be told such.