Simon Says

Simon Says is a fun game to play with children. Here are the rules:
1. Choose one person to be "Simon" (it's best to start with a grown-up as Simon)
2. Everyone else has to do what Simon says
3. ONLY do what Simon says if the command starts with the phrase "Simon says"
4. If you do what is commanded but Simon didn't say "Simon says," you're out!

Here's a common sequence of commands:
Simon says arms up!
Simon says arms down!
Arms up! (if you put your arms up here, you're out)
Simon says arms up!
Arms down! (if you put your arms down here, you're out)