He that will not hear motherheads, shall hear stepmother

Similar English and Irish sayings:

Take heed of a stepmother: the very name of her suffices Take heed of a stepmother: the very name of her suffices
With the arrival of the stepmother the father becomes a stepfather With the arrival of the stepmother the father becomes a stepfather
He who says what he likes shall hear what he does not like He who says what he likes shall hear what he does not like

Proverbs and English sayings