Oh, colonel. When you have a free moment, I'd like to tell you about the latest nightmare I've had.

7 seconds sound clip from the 20 Million Miles to Earth (1957) movie soundboard.

You can hear this line at 01:03:01.178 in the Blu-ray version of the movie.

Quote context

[...]

- Grandpa, will you need me anymore?

- No, no. Grazie.

- You caught me unprepared.

- I've been cooking over a hot creature all day.

- You're getting lovelier every time I see you. Or is it the lights in this room?

- Well, next to that, I look dandy.

- Oh, colonel. When you have a free moment, I'd like to tell you about the latest nightmare I've had.

- I'm not busy for the moment. Tell me now.

- Well, it concerns a dark cafe, a small table, a bottle of wine...

- And a burning candle?

- Mm-hmm.

- And that candle's burning lower and lower and lower. Pretty soon, it's gonna burn out.

- Well, maybe if we hurry, we can find that dark cafe before it's too late.

- Good.

[...]