fall over yourself to do something

fall over (oneself) to (do something)

To expend an inordinate amount of energy or effort to do something, especially as a means of gaining attention or approval. John is such a teacher's pet, falling over himself to impress Mrs. Smith. My parents fell over themselves to try to seem cool to my friends. It was pretty embarrassing, to be honest.See also: fall, over

fall ˈover yourself to do something

(informal) do everything you can for somebody because you want to please and impress them: After he became manager, people were suddenly falling over themselves to help him.See also: fall, over, something