take the words out of mouthtake the words (right) out of (someone's) mouth
to say exactly what someone else is about to say.
I was just going to mention that, but you took the words right out of my mouth.
take the words out of (one's) mouth
To unknowingly say what someone else is thinking or about to say. You took the words right out of my mouth—I think she looks gorgeous, too!
take the words out of someone's mouth
Fig. to say something just before someone else was going to say the same thing; to say something that someone who agrees with you might have said. That is exactly right! You took the words right out of my mouth! When you said "expensive," you took the words right out of my mouth!