What are you talking about? You sound like I'm an old man.

3 seconds sound clip from the Rocky IV (1985) movie soundboard.

You can hear this line at 00:21:13 in the Blu-ray version of the movie.

Quote context

[...]

- Snails. I never had 'em, you know. I've seen 'em in the garden, but I never wanted to eat 'em.

- I didn't say anything about snails. I said nails. Nails, Stallion.

- Okay. Nails, yeah.

- Well, you look pretty good, but, you know, just do me a favor. When you go up there, try not to wear yourself out, okay?

- Yeah. Wear myself out. Sure.

- Well, it's just that you ain't been in the ring for, like, five years, so I just want you to maintain a little bit.

- What are you talking about? You sound like I'm an old man.

- I'm in the best shape of my life. I'm stronger, I'm quicker.

- Well, hey, hey, I'm not saying you're not ready or anything, but personally, if it were me, I wouldn't mind postponing a couple of weeks.

- Postpone?

- Yeah. I mean, come on, Apollo, we don't know anything about this guy you're fighting, really.

[...]