A vulnerable adult is someone who is like a kid but grown up. They may need help taking care of themselves because they have trouble doing things on their own. This could be because of a medical condition, a disability, or simply because of their age. Sometimes, bad people might try to take advantage of vulnerable adults and do things that are mean or unfair. That's why it's important for us to be kind and helpful to vulnerable adults, and to make sure they are safe and protected from harm.