You're an errand boy sent by grocery clerks to collect a bill.
13 seconds sound clip from the Apocalypse Now movie soundboard.
You can hear this line at 02:42:09 in the Blu-ray version of the movie.
Quote context
[...]
- I don't see any method at all, sir.
- I expected someone like you. What did you expect?
- You're an errand boy sent by grocery clerks to collect a bill.
- Why? Why would a nice guy like you wanna kill a genius?
- Going down pretty good, huh?
- Why? You know? Do you know that the man, the man really likes you?
- He likes you. He really likes you, but he's got something in mind for you.
- Aren't you curious about that? I'm curious. I'm very curious. Are you curious?
[...]