You'll be lucky if you get halfway. Now, go on.
5 seconds sound clip from the Jason and the Argonauts (1963) movie soundboard.
You can hear this line at 00:22:08 in the Blu-ray version of the movie.
Quote context
[...]
- Discus?
- Come on.
- See that rock? No thrower has ever reached it.
- And is the contest to hit it or pass it?
- You'll be lucky if you get halfway. Now, go on.
- No, after you, Hercules. I've never thrown a discus before. I'd like to see how it's done.
- Let Hylas have his moment of triumph while he may.
- You shall have your place, Hylas.
- I have found the finest crew in all Greece. Now for a ship that is worthy of them.
[...]