Getting in Trouble for Something I Didn’t Do

So I was sitting here, minding my own business and making myself dinner, and my brother came in and spat in my food. I slapped him on the arm and he took a knife and threatened me. So I took a tray to shield myself. We argued back and forth, saying “put it down”. To scare me, my brother called the cops and hung up. I told him not to. but he did anyway. I was sick of his crap, so I went up to my room to watch TV. All of a sudden my mom called me downstairs. As soon as I get down there, both of my parents were cussing me out. They pointed outside and the cops were sitting in the driveway. I told them that I didn’t call them, my brother did, but they said, “well, you were watching him, so it’s all your fault.” I got everything entertaining taken away from me and I got grounded for a long time!