She couldn't wait to tell her parents about her day.

Meaning: She was unable to stay in one place until the people who gave birth to her arrived because she wanted to share information about her day.

Choice of Words: Couldn't is a contraction of "could not", which means to be unable to do something. Wait means to stay in one place until something happens. Parents are the people who gave birth to or adopted a child.

Alternative Expressions

Related Expressions