Context #1
Jill: I like John, but there is something a little strange about him.
Jane: Yeah, he always wears the same shirt.
Jill: You know what? That's it! You hit the nail on the head!
Context #2
Tom: People in Southern California drive so dangerously on the freeway. I wonder why?
Joe: Well, people could avoid a lot of accidents if they just used their turn signals when changing lanes.
Tom: Exactly! You hit the nail on the head!
Meaning: "to hit the nail on the head" is used when someone has an opinion or an idea and it is exactly right.
Jill: I like John, but there is something a little strange about him.
Jane: Yeah, he always wears the same shirt.
Jill: You know what? That's it! You hit the nail on the head!
Context #2
Tom: People in Southern California drive so dangerously on the freeway. I wonder why?
Joe: Well, people could avoid a lot of accidents if they just used their turn signals when changing lanes.
Tom: Exactly! You hit the nail on the head!
Meaning: "to hit the nail on the head" is used when someone has an opinion or an idea and it is exactly right.
https://languagesystems.edu/
