[{"role": "user", "content": "I'm trying to learn some phrases to express my feelings in Italian, and I was wondering if you could help me translate the sentence 'You're the worst' into Italian."}, {"role": "assistant", "content": "The translation of 'You're the worst' in Italian is 'Siete il peggio.' However, please note that this is a formal way of saying it, and it's more common to use the informal form 'Sei il peggio' when speaking to someone you're familiar with."}]