- Stuff it, man!
- Hey, don't you never say that! Come here!

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

You can hear this line at 00:26:26.883 in the Blu-ray version of the movie.

Quote context

[...]

- Stick that up your business.

- What are you so insulted about? Want me to take a shot? All right... I'll take a shot.

- Hey, Rocky, how 'bout a bottle?

- No wine, man.

- Come on. Just a little.

- Rory, does your brother know you're hanging out so late?

- Screw you, Go-go.

- Her brother knows.

- Hey, these guys teach you to talk like that?

- Stuff it, man!

- Hey, don't you never say that! Come here!

- You stink up the neighborhood!

- Hey! You know, when I was your age, there was only one girl in the whole neighborhood talked like that, you know what I mean? That was it. Just one.

- What are you doing? It'll make your teeth yellow. Don't do that.

- I like yellow teeth.

- It'll make your breath like garbage.

- Maybe I like garbage.

- Come on, nobody likes garbage.

- Anyway, this girl with the dirty mouth... she wasn't bad-lookin', but, you see, none of the guys ever took her seriously, see. They never took her out for any serious datin'.

[...]