I figured it just isn't right to drink champagne in matador pants.
6 seconds sound clip from the The Seven Year Itch (1952) movie soundboard.
You can hear this line at 00:44:41 in the Blu-ray version of the movie.
Quote context
[...]
- Drinking? Who, me? Whatever gave you that idea?
- I think I'd better hang up now, Helen. The bathtub is running over. Good night. Night.
- Oh, say.
- I figured it just isn't right to drink champagne in matador pants.
- Would you mind fastening my straps in the back?
- Potato chips, champagne. Do you really think you can get it open?
- Boy, you sure got powerful thumbs. I used to play a lot of badminton.
- Get the glasses... Quick, quick! The glasses!
- Pour it.
[...]