That's the $80.

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

You can hear this line at 00:34:39.393 in the DVD version of the movie.

Quote context

[...]

- Yeah, haven't had a hanging in a long time!

- It'll shoot the fleas off a dog's back at 500 yards, Tannen, and it's pointed straight at your head!

- You owe me money, blacksmith.

- How do you figure?

- My horse threw a shoe. And seeing as you was the one that done the shoeing, I say that makes you responsible.

- Well, since you never paid me for the job, I say that makes us even.

- Wrong! See I was on my horse when it threw the shoe, and I got throwed off! And that caused me to bust a perfectly good bottle of fine Kentucky red eye. So the way I figure it, blacksmith, you owe me $5 for the whiskey, and $75 for the horse!

- That's the $80.

- Look, if your horse threw a shoe, bring him back, and I'll reshoe him.

- I done shot that horse!

- Well, that's your problem, Tannen.

- Wrong. That's yours.

- So from now on, you better be looking behind you when you walk. Because one day you're gonna get a bullet in your back.

[...]