Sure, Marcie, sure.
3 seconds sound clip from the It's Christmastime Again, Charlie Brown movie soundboard.
You can hear this line at 00:18:16.523 in the Blu-ray version of the movie.
Quote context
[...]
- Every time there's a Christmas play I end up being a sheep.
- Watch out for the curb here, sir.
- What?
- Slouching toward Bethlehem, huh, sir?
- You look cute in your sheep costume, sir.
- I was up late last night memorizing all my lines.
- You're a sheep, sir. All you have to say is, 'Baa.'
- My mind has gone blank. I'm doomed. I wonder if this happened to Laurence Olivier?
- Looks like the play will start soon.
[...]