Well, the first thing we have to do is, you have to change.
6 seconds sound clip from the Grease (1978) movie soundboard.
You can hear this line at 00:45:49 in the Blu-ray version of the movie.
Quote context
[...]
- I'll believe that when I see it.
- Let's start with the first rule. Cutting down to two packs a day.
- Now what sort of athletics are you interested in? Do you like the rings?
- Yeah. I installed some rings just a couple of weeks ago.
- Well, the first thing we have to do is, you have to change.
- I know. That's why I'm here, you know... to change.
- Fellas, I wanna introduce a new man Danny. Let's give him a tryout.
[...]