- Mr. Strickland. Mr. Strickland. It's me, sir. It's Marty.
- Who?
- It's Marty McFly. Marty McFly. Don't you know me, sir? From school, sir.

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

You can hear this line at 00:42:38.106 in the Blu-ray version of the movie.

Quote context

[...]

- That's right. You keep running, sucker! And you tell that realty company that I ain't selling! You hear? We ain't gonna be terrorized!

- This has gotta be the wrong year.

- 1985? It can't be.

- Drop it.

- So you're the son of a bitch who's been stealing my newspapers.

- Mr. Strickland. Mr. Strickland. It's me, sir. It's Marty.

- Who?

- It's Marty McFly. Marty McFly. Don't you know me, sir? From school, sir.

- I've never seen you before in my life, but you look to me like a slacker.

- Yeah, that's right. That's right. I am a slacker. Don't you remember? You gave me detention last week.

- Last week? The school burned down six years ago.

- Now, you got exactly three seconds to get off my porch with your nuts intact. One.

[...]