Young man, what do you know?
5 seconds sound clip from the Ninjutsu (1968) movie soundboard.
You can hear this line at 00:34:18 in the Blu-ray version of the movie.
Quote context
[...]
- After you're hired, I will come back and visit you there.
- Good.
- Hey, Mister, you shouldn't be working so hard at your age.
- Young man, what do you know?
- I collect the firewood for General Chi's household. It isn't much, it's all I can do.
- Hmm, hey Mister, let me give you a hand here.
- Thank you. I'm sorry to bother you. Thank you very much.
- Thank you very much, you're too kind.
[...]