That makes two of us. spoken language
I agree with your opinion; me too
A: This room is poorly ventilated. B: That makes two of us.
A: I'm about to go to the park for a run B: That makes two of us.
Used to share ideas or opinions in common with other people in public
Used to say that you understand what someone is saying or suggesting
The origin of this expression is not clear.
Used to to emphasize that attention is paid to the individuals who complain or cause problems
Sometimes, you shouldn't be so quiet because the squeaky wheel gets the grease.