You don't sound at all sure about what you mean, Mr. Clay.
4 seconds sound clip from the The Greatest (1977) movie soundboard.
You can hear this line at 00:32:50.043 in the Blu-ray version of the movie.
Quote context
[...]
- Mr. Clay? How do you... Where do you know me from?
- Lots of places. You know, the picture on your album cover, The Greatest.
- Oh, that album cover, The Greatest. You got that?
- How many times have you heard that?
- Mmm!
- No, my kid brother keeps listening to it, you know.
- Mmm-hmm.
- No, I'm not looking at nothing.
- Anything special about my, uh...?
- No, nothing special. Well, it is... Well, what I mean is...
- You don't sound at all sure about what you mean, Mr. Clay.
- Come on, let me have a drink.
- You know what? Yours looks pretty special, too.
- Look, I'll tell you what. Don't quit wasting time. Just answer me a few questions.
[...]