Ninja moves

Well at school today I was in science working on my ninja moves ( cool huh? ) when this kid comes up. And says " give me that ruler" and I said no so he started pulling on it but I pulled it right out of his hands and after the third time of this I threatened to hit him with it and put it up and he slapped it out of my hands and it went flying and hit my friend "ouch" was all I heard. Poor friend I felt bad of coures.