I'll, uh... I'll get another cup. Won't be a second.
7 seconds sound clip from the Desk Set (1957) movie soundboard.
You can hear this line at 00:51:23 in the Blu-ray version of the movie.
Quote context
[...]
- Ah! Dinner and a fire going. How lucky can a guy get?
- You two know each other, don't you?
- Just having dessert. Won't you join us? There's plenty.
- I'll, uh... I'll get another cup. Won't be a second.
- I, uh, suppose I should have called first.
[...]