Get serious.
3 seconds sound clip from the Grease (1978) movie soundboard.
You can hear this line at 01:00:46 in the Blu-ray version of the movie.
Quote context
[...]
- You still gonna go to the dance?
- Man, I'm gonna have the hottest date there.
- Biggest thing that ever happened to Rydell High, and we don't have dates.
- What about Rudy from the Capri Lounge?
- Relax. I think our luck is changing.
- Do you know what you're doing?
[...]