- I thought it was pretty funny at the time, but after reflection it wasn't such a joke, and I apologize.
- You should.

10 seconds sound clip from the The Shootist movie soundboard.

You can hear this line at 00:24:11.208 in the DVD version of the movie.

Quote context

[...]

- I help Jay with deliveries sometimes.

- That was the nice gentleman you were with yesterday.

- Where's your mother?

- She's in the kitchen, I think.

- Well, goodbye, sir. It was real nice meeting you.

- Good-bye.

- Mrs. Rogers, I... hope you'll forgive me, for taking Hickok's name.

- I thought it was pretty funny at the time, but after reflection it wasn't such a joke, and I apologize.

- You should.

- The only way you can show your repentance is to leave.

- Well, that I cannot do.

- Mr. Books, you are a notorious individual utterly lacking in character or decency.

- You're an assassin.

- That's according to which end of the gun you're on.

[...]