As a matter of fact, until last night, I was sleeping pretty well.

4 seconds sound clip from the Is This Goodbye, Charlie Brown? (1983) movie soundboard.

You can hear this line at 00:18:59.455 in the DVD version of the movie.

Quote context

[...]

- And he jokes about sending Lucy back home.

- I wish he would send me back.

- Ask Sally if she has seen any good movies lately.

- You miss them, don't you, Charles?

- Yes, I do.

- You're not getting much sleep, are you, Charles?

- As a matter of fact, until last night, I was sleeping pretty well.

- Want to tell me about it, Charles?

- Well, last night, I felt sure I was cracking up. I awakened standing up, holding the phone to my ear, in the middle of the night.

- Then, when I went back to bed I was wide-awake, and it took me forever to fall asleep.

- Did you talk to Peppermint Patty, by any chance?

- Strange you would say that. I did dream I had spoken to Patty on the phone.

[...]