- I can't believe it. He's ours?
- Yeah.
- He's really ours?

5 seconds sound clip from the Rocky II movie soundboard.

You can hear this line at 01:25:23.294 in the Blu-ray version of the movie.

Quote context

[...]

- I don't need that. I ain't drinking now.

- So, you haven't seen the baby?

- No, come on. I was waiting to see him together.

- Hey, the kid's a winner. He's got forearms like him, Mickey. Here he is now. Look.

- There's your mommy.

- Oh, baby!

- Is that it?

- I can't believe it. He's ours?

- Yeah.

- He's really ours?

- Thank you.

- Come on. You done all the work. Adrian, I can't believe you done this.

- Believe me, we did.

- Oh, no. He ain't got a name. What do you want to call him?

- Paulie's a great name.

- Yeah, Paulie's a pretty good name.

- What about after the father?

- Rocky, Jr.?

- Come on. You really want to do that?

- Yes.

[...]