To cyberbully is to tease, make fun of, or insult a
person on the
internet. Basically acting like a tough guy or a bully on the
internet.
Someone got cyberbullied and killed herself later on, because what was said to her hurt really badly.
Joe: Yo girl, you really are a disgrace to this world. You shouldn't be here.
Lisa: I am not a disgrace! I can do -
Joe: Nobody likes you. Not even your
parents.
Lisa: What?! Yes they do!
Joe: Prove it; did they ever SAY they love you? Probably not.
Lisa: No! Stop! You're wrong!
Joe: Hmph, you're not meant to belong anywhere in this world.
Lisa: STOP!
Later on, Lisa cries, and tells her
parents she was being made fun of and insulted on the
internet.
Parent: Oh, he was a cyberbully!