I did it when I was invisible. I did it.
3 seconds sound clip from the It's Magic, Charlie Brown movie soundboard.
You can hear this line at 00:23:07.936 in the VHS version of the movie.
Quote context
[...]
- I think maybe I'll practice a few tees. There. That's about right.
- Welcome home, Charlie Brown.
- I did it. I finally kicked that football.
- Oh no, you didn't. I just pulled it away.
- I did it when I was invisible. I did it.
- You can't prove it, Charlie Brown. No one will believe you.
- Snoopy knows I did it. He made it possible.
- Why, that stupid dog of yours couldn't disappear himself out of a paper bag.
- Hey, what are you doing? Put me down. Put me down! Hey. Hey! You can't leave me up here. Hey!
[...]