Anyway, if Grandpa hadn't hit him, then none of you would have been born.
7 seconds sound clip from the Back to the Future movie soundboard.
You can hear this line at 00:16:10 in the Blu-ray version of the movie.
Quote context
[...]
- I think it's terrible. Girls chasing boys.
- When I was your age, I never chased a boy or called a boy or sat in a parked car with a boy.
- Then how am I supposed to ever meet anybody?
- Anyway, if Grandpa hadn't hit him, then none of you would have been born.
- Yeah, well. I still don't understand what Dad was doing in the middle of the street.
- What was it, George? Bird-watching?
- Anyway, your Grandpa hit him with the car and brought him into the house.
- He seemed so helpless, like a little lost puppy, and my heart just went out to him.
[...]