Replying to To do Essay or to Paraphrase another?

It is 12 and i have an Essay on the novel The Chrysalids due tomorrow, which was actually due 1 week ago, but i managed to buy extra time saying my computer broke. I am so tired right now, i have City Finals for Rugby tomorrow, and i am debating paraphrasing my buddies essay he sent to me. What is the chance of me getting caught if do parapharse it? suspecting my teacher already marked my buddies essay last week? This is grade 10 shit so it isn't hard, but it just sucks. I want to go to bed.