Don't yell before a game. It's bad luck.
4 seconds sound clip from the A League of Their Own movie soundboard.
You can hear this line at 01:27:15 in the Blu-ray version of the movie.
Quote context
[...]
- Are you physically unable to show up on time?
- Oh, let's not go to the World Series without Stilwell's toys!
- Alice, what time is it where you live?
- Don't yell before a game. It's bad luck.
- Yeah?
- Avoid the clap. Jimmy Dugan. Wow.
- Dottie. Write to us. We'll miss you.
[...]