While this may be true, this isn't a great way to express frustration. "Children are not here to [take care] of adult emotions. That flips the essential hierarchy of a healthy parent-child relationship upside down. And this is a terrible burden to place on a child," Dr. Lapointe said. Besides the fact that "pissed off" might get repeated by them at school or around other children, the real problem is that when expressing anger, parents should mimic the language they expect their child to use. Just like we tell them to use their words, it's better for adults to say that they're angry or mad, and explain why in a calm and controlled way.