Because I had a dream about him. I dreamed he got hit by a car, and you and Mr. Crandall buried him in the Pet Sematary.
9 seconds sound clip from the Pet Sematary (1989) movie soundboard.
You can hear this line at 00:39:34 in the Blu-ray version of the movie.
Quote context
[...]
- Daddy!
- He was asleep on the porch when I left.
- That was a silly dream, wasn't it?
- Yes.
- You want to take your son, Doc?
- Hey!
[...]