It is common for young children to express their frustration or anger in different ways, including saying things that they do not fully understand the meaning of. In this case, the two-year-old may have heard the phrase "spank" being used as a form of punishment or discipline, and in her limited understanding, she may have used it to convey her frustration or disagreement with her mother's decision. It is important to remember that at this age, children are still learning how to navigate their emotions and communicate effectively.
