Happens in better families too.
More Finnish Proverbs:
The pot reproaching the kettle.Finnish
Never leave a mate behind.
Finnish
No matter how misbehaved a child, the parents will accept.
Finnish
No need to plough and sow madmen, they grow by themselves.
Finnish
He who shares the meat is always left with the bone.
Finnish
Help the man climbing a hill, not the one standing below it.
Finnish