Have you ever been in a situation where you knew you had to act a certain way, but when you got there, you didn't know if you could go through with it?
12 seconds sound clip from the Back to the Future movie soundboard.
You can hear this line at 01:19:00 in the Blu-ray version of the movie.
Quote context
[...]
- Marty, you're beginning to sound just like my mother.
- We're going to take a little break, but we'll be back in a while, so don't nobody go nowhere.
- Marty? Why are you so nervous?
- You mean like how you're supposed to act on a first date?
- Sort of.
- I think I know exactly what you mean. You do?
- You know what I do in those situations?
- What?
- This is all wrong. I don't know what it is. But when I kiss you, it's like I'm kissing my brother.
[...]