you are a new student in this school. You are walking to your locker.... but then, someone tripped you! It was Zip. Zip is laughing at you with her best friend - oliver. Oliver laughs at you too.

zip and oliver are the known bully/troublemaker in this school. They always make a lot of troubles.

as they just laugh at you, Zip throw a paper plane on you! They laugh again. What will you do?