- You know what I mean?
- Yeah.
- Why are you laughin'?

4 seconds sound clip from the Rocky (1976) movie soundboard.

You can hear this line at 00:43:53.095 in the Blu-ray version of the movie.

Quote context

[...]

- But I'm a southpaw, and nobody wants to fight no southpaw, know what mean? Huh?

- You know how I got started in fightin'?

- Huh?

- No.

- Am I talkin' too loud?

- Three minutes!

- My father... he's, uh... my old man, he was never too smart. He says to me, 'You weren't born with much of a brain, so you better start using your body,' right? So I become a fighter.

- You know what I mean?

- Yeah.

- Why are you laughin'?

- My mother, she said the opposite thing.

- What'd she say? What'd she say, the opposite?

- She said you weren't born with much of a body, so you better develop your brain.

- Did she say that?

- Yo! Time!

- Can I ask you a question?

- Absolutely.

- Why do you wanna fight?

- 'Cause I can't sing or dance.

[...]