Can you imagine? Of course he knows that word. It's his trademark.
6 seconds sound clip from the A Boy Named Charlie Brown movie soundboard.
You can hear this line at 00:34:26.125 in the DVD version of the movie.
Quote context
[...]
- Oh-oh. He's out, he missed it. Now it's...
- 'Charities.' C-h-a-r-r-t-e-i-s. 'Charities.'
- He missed it. Oh-oh. I guess now it's up to me. It's Sydney or the bush. Here it is.
- Yes, ma'am, the word is 'insecure'? Yes, that's a word I'm well acquainted with.
- Can you imagine? Of course he knows that word. It's his trademark.
- 'Insecure.' I-n-s-e-c-u-r-e. 'Insecure.'
- Boy, you really did it. You were great. You're our class champion.
- You didn't think I could do it, did you? But I did it.
[...]