When you hear two whistle blows, each one of you take your toy back where you got it from and come right back to the carpet.
9 seconds sound clip from the Kindergarten Cop (1990) movie soundboard.
You can hear this line at 00:49:47 in the Blu-ray version of the movie.
Quote context
[...]
- Very good. You did very well.
- Now we're going to play another game.
- Two!
[...]