In the book Chrissa Stands Strong, she receives a mean message online. Using the Internet or cell phones to bully others is known as cyberbullying, and it’s never O.K. What should you do if you receive a hurtful message? Don’t respond.

Instead, show the message to an adult right away, then get offline and talk about how to handle the situation. Check yourself, too, when you’re sending a message—especially if you’re angry. Once you press “send,” you can’t take that message back.