Your father's biggest problem is that he loses all self-control when someone calls him chicken.
— Lorraine Baines Mcfly (Lea Thompson)
6 seconds sound clip from the Back to the Future Part II movie soundboard.
You can hear this line at 00:29:43.040 in the Blu-ray version of the movie.
Quote context
[...]
- What is it? What's the matter, Doc?
- For a moment, I thought I saw a taxi in my rear display. I thought it was following us. Weird.
- I can't believe this window's still broken.
- Oh, look how worn out this is.
- Your father's biggest problem is that he loses all self-control when someone calls him chicken.
- How many times have we heard it, George?
- 'Mom, I can't let them think I'm chicken.'
- You're right. Well, you're right!
- Oh, you mean with the Rolls-Royce?
[...]