I know exactly how you feel. There's a kid named Ahmed at my school. He asked me what I was doing for a big art project, I had made a rather good sketch of a tree in a pool of gasoline, growing random bits of trash instead of leaves. Guess what he decides to do for his project? The exact same thing, except with a happy tree next to the polluted one to show before and after. What's worse is that he denies it, even when we're alone, even when everyone at our table knows I did it first! He's such an starfish.