beat me over the head with it

beat/hit (someone) over the head with (something)

 

≒ rub it in

 

It is used when someone states the obvious, usually a painful truth.

너무 당연한 사실 또는 이미 알고 있지만 받아들이기 어려운 사실을 지적하는 것. 또는 이를 반복적으로 언급하는 것.

한국말로는 '팩폭'

 

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."