I left him in a suspended animation kennel.
3 seconds sound clip from the Back to the Future Part II movie soundboard.
You can hear this line at 00:23:18.750 in the Blu-ray version of the movie.
Quote context
[...]
- Flying DeLorean. I haven't seen one of those in 30 years.
- Hey, I'm walking here! I'm walking here! What the hell? Don't drive, trank, low-res scuzzball!
- 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.
[...]