Great Scott, the sleep inducer. I was afraid of this. Because I used it on Jennifer, there wasn't enough power left to knock your son out for a full hour. Damn!
9 seconds sound clip from the Back to the Future Part II movie soundboard.
You can hear this line at 00:23:33.368 in the Blu-ray version of the movie.
Quote context
[...]
- I left him in a suspended animation kennel.
- Einstein never knew I was gone!
- Marty! What in the name of Sir Isaac H. Newton happened here?
- Oh, yeah, Doc, listen, my kid showed up. All hell broke loose.
- Doc, Doc, Doc, look at this! It's changing.
- Thus, history, future history, has now been altered, and this is the proof!
[...]