- I ain't never had good footwork.
- Never mind footwork. Now you're all balanced.

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

You can hear this line at 01:19:46.082 in the Blu-ray version of the movie.

Quote context

[...]

- Listen, why don't you just make the meat, okay?

- Okay, I'll make the meat.

- Yo.

- It's okay.

- I'm sorry.

- Hey.

- Underneath, underneath, underneath. Come on! Come on!

- Hold it. Hold it. Hold it, Rock, will ya? You drive me crazy. You're so sloppy because you're off balance.

- Let's try this. Now, take this string. Tie it to both ankles. Leave about two feet of slack.

- I ain't never had good footwork.

- Never mind footwork. Now you're all balanced.

- Rocky Marciano had the same problem, and this string cured it. To the idea that if you can move and you can hit without breaking the string, you got balance. You become a very dangerous person. You follow?

- You're lookin' good, Rock.

- Thanks.

- Let's go.

- That's it. That's it. Underneath.

- Hey, Rock.

- What?

- How 'bout you give us your autograph?

- Get outta here!

[...]