- It wasn't any dream.
- Oh, I wouldn't be too sure. It's pretty hard to tell once you've gone to sleep, isn't it?
- Is it?
— C.K. Dexter Haven (Cary Grant)
8 seconds sound clip from the The Philadelphia Story movie soundboard.
You can hear this line at 01:26:26 in the Blu-ray version of the movie.
Quote context
[...]
- Apparently the little cherub has heard or seen something.
- I must say, you have a certain amount of cheek, walking in here on this of all mornings.
- Do I?
- Yes.
- What's all this about Mr. Connor, Dinah?
- What's the matter? Did the party last night give you bad dreams?
- Oh, I wouldn't be too sure. It's pretty hard to tell once you've gone to sleep, isn't it?
- Is it?
- Hello. Um, isn't it a fine day though?
- Is everybody fine? That's fine.
[...]