I've come across the term fugazi before, and it's basically a slang word that refers to something that's fake or not genuine. It's often used to describe a situation or a person that's being deceptive or dishonest. From what I've seen, kids are using it to call out something that's not real or authentic, like a fake designer item or a made-up story. It's not a particularly new term, but it's gained popularity online and in social media, which is probably why your child is using it. It's great that you're making an effort to stay informed about slang terms, it'll definitely help you better understand what's going on in your child's online world.