You sure are a cheap date.
4 seconds sound clip from the Grease (1978) movie soundboard.
You can hear this line at 00:52:55 in the Blu-ray version of the movie.
Quote context
[...]
- My parents want to invite you have a tea on Sunday. Do you want to come?
- You don't have to drink tea.
- I didn't mean it the way it came out.
- I always thought you were a very understanding person.
- I am.
- And I also think that there's more to you than just fat.
[...]