Let me give you a nickel's worth of free advice, young man.
5 seconds sound clip from the Back to the Future movie soundboard.
You can hear this line at 00:07:17 in the Blu-ray version of the movie.
Quote context
[...]
- All right, come on. I think we're safe.
- You know, this time it wasn't my fault.
- The doc set all his clocks 25 minutes slow.
- Doc? Am I to understand you're still hanging around with Dr. Emmett Brown, McFly?
- Tardy slip for you, Miss Parker. And one for you, McFly. I believe that makes four in a row.
- Let me give you a nickel's worth of free advice, young man.
- This so-called Dr. Brown is dangerous. He's a real nutcase.
- You hang around with him, you're gonna end up in big trouble. Ooh. Yes, sir.
- You got a real attitude problem, McFly. You're a slacker.
- You remind me of your father when he went here. He was a slacker, too.
- Can I go now, Mr. Strickland?
[...]