Are you against bullying or not?
There's a difference between bullying and cyberbullying.
Bullying is an issue because it can involve physical contact, and avoiding it once it has begun is impossible.
Cyberbullying is harmless and avoiding it can be done by 4 different mean.
Mean 1: Step 1: Alt + F4
Mean 2: Step 2: Press the power button on the PC, alternatively unplug the PC.
Mean 3: Step 1: Block the user.
Mean 4: Step 1: Ignore the user and go on with your usual things.