Mom, Mom, Mom, calm down. I wasn't yelling. Needles and I were just kind of joking.
5 seconds sound clip from the Back to the Future Part II movie soundboard.
You can hear this line at 00:36:51.618 in the Blu-ray version of the movie.
Quote context
[...]
- But it doesn't open. There's no doorknob.
- Press your thumb to the plate.
- Marty, what does this fax mean?
- Oh, Mom, it's a joke, an office joke. Kind of a joke fax.
- Oh, Marty, I heard you yelling.
- Mom, Mom, Mom, calm down. I wasn't yelling. Needles and I were just kind of joking.
- Welcome home, Jennifer. Marty, have you lost your job?
(BOTH GASPING) I'm young! -I'm old!
- Marty! Marty! Marty, come quick! Quick!
- She encountered her older self, and went into shock, just as I predicted.
- She'll be fine. Let's get her back to 1985, and then I'm gonna destroy the time machine.
[...]