What is snow blow from stepmother?

"Snow blow" from a stepmother typically refers to the act of a stepmother making a derogatory or dismissive remark towards her stepchild, often in a sarcastic or belittling manner. This phrase can suggest a lack of warmth or affection, implying that the stepmother is cold or harsh in her treatment. It's often used in a figurative sense to highlight the strained relationships that can exist in blended families.