That's exactly what I think. You took the words out of my mouth.

那正是我所想的，你说出了我的心里话。

《新英汉大辞典》

I quite agree with you; in fact you took the words out of my mouth.

我完全同意你所说的；实际上，你说了我想说的话。

youdao

You just took the words out of my mouth.

你正说出了我想说的话。

youdao

I'm proud to be your son." "My boy,you took the words right out of my mouth.

VOA: special.2009.07.19