- Hey, Doc, Doc, don't worry about it. Monday morning 8:00 a.m. We're gonna be gone, right?
- Theoretically, yes, but what if the train's late?

Marty Mcfly (Michael J. Fox), Dr. Emmett Brown (Christopher Lloyd)

7 seconds sound clip from the Back to the Future Part III movie soundboard.

You can hear this line at 01:01:19.518 in the DVD version of the movie.

Quote context

[...]

- Tonight, everything concerns the law. Now break it up. Any brawling, it's 15 days in the county jail.

- All right, folks. Come on, this is a party. Come on! Let's have some fun!

- 8:00 Monday, runt. If you ain't here, I'll hunt you and shoot you down like a duck.

- It's dog, Buford. Shoot him down like a dog.

- Let's go, boys! Let these sissies have their party!

- Marty, what are you doing, saying you're gonna meet Tannen?

- Hey, Doc, Doc, don't worry about it. Monday morning 8:00 a.m. We're gonna be gone, right?

- Theoretically, yes, but what if the train's late?

- Late?

- We'll discuss this later.

- No, we'll discuss it now. Late? What do you mean?

- Thank you for your gallantry, Mr. Eastwood. Had you not interceded, Emmett might have been shot.

- Marty... Clint, I'm gonna take Clara home.

- You sure set him straight, Mr. Eastwood. I'm glad somebody finally got the gumption to stand up to that son of a bitch.

[...]