hit (someone) over the head with (something)

"Hitting someone over the head with ___" is an idiom that means to repeat something again and again. For example:

After the second or third time she said it, I was like, "All right. We get it. You don't have to keep hitting us over the head with it."

"Hitting someone over the head" with an idea is usually a bad thing.

This phrase appears in these lessons: