This bat is no good. It's too light. That ball they're using is no good either.
5 seconds sound clip from the Charlie Brown's All Stars! movie soundboard.
You can hear this line at 00:17:05.827 in the DVD version of the movie.
Quote context
[...]
- Look at that! Linus got a hit.
- Oh, good grief. Out by a blanket.
- Lucy, if you grit your teeth and show real determination, you'll always have a chance.
- Let's see you grit your teeth. Fantastic. You'll scare their pitcher to death. Go get a hit.
- Get a hit? I can't even see the pitcher.
- This bat is no good. It's too light. That ball they're using is no good either.
- How can anyone hit when the sun is so bright? I bat better when it's cloudy.
- That's it, Snoopy. Grit your teeth.
[...]