The best things happen while you're dancing. Things that you would not do at home come naturally on the floor. (3)
16 seconds sound clip from the White Christmas (1954) movie soundboard.
You can hear this line at 01:25:09 in the Blu-ray version of the movie.
Quote context
[...]
- But don't you think we ought to kiss or something?
- Um... Not until it's absolutely necessary.
- Bob, would you like to dance?
- Hey, Betty. How about some exercise? Come on.
- Mr. Herring, this is Miss Lennis.
- Bye.
- May I?
- Looks like it's absolutely necessary.
[...]