- Wait a minute. Where you going now?
- To intercept the real Marty Jr. You're taking his place. Around the corner at the Cafe '80s.

6 seconds sound clip from the Back to the Future Part II movie soundboard.

You can hear this line at 00:10:25.801 in the Blu-ray version of the movie.

Quote context

[...]

- My daughter. Wait a minute. I have a daughter?

- You see? This one event starts a chain reaction that completely destroys your entire family.

- Hey, Doc, this date... This is tomorrow's newspaper.

- Precisely, I already went further ahead into time to see what else happens.

- I backtracked everything to this one event. That's why we're here today, to prevent this incident from ever happening.

- Damn! I'm late!

- Wait a minute. Where you going now?

- To intercept the real Marty Jr. You're taking his place. Around the corner at the Cafe '80s.

- Guy named Griff. Just say no!

- Hey, what about Jennifer? We're not just gonna leave her here.

- Don't worry, she'll be safe. It'll just be for a few minutes.

- And, Marty, be careful around that Griff character.

[...]