Just a second. Let me see if I can find it here.
5 seconds sound clip from the Back to the Future movie soundboard.
You can hear this line at 01:16:27 in the Blu-ray version of the movie.
Quote context
[...]
- 'Evening, Dr. Brown. What's with the wire?
- Oh, just a little weather experiment.
- No! Don't touch that! Some new, specialized weather-sensing equipment.
- Just a second. Let me see if I can find it here.
- Do you mind if we park for a while?
- That's a great idea. I'd love to park.
- Huh?
- Marty, I'm almost 18 years old. It's not like I've never parked before.
[...]