You means: someone who is awesome. Keep being you boo.
Me: You are great!
You: Awww, Thanks.
YOU Are an amazing person! If you are reading this, just know that you are so very loved and you are respected greatly. Have a nice day!
Person 1: "Hey you! Didn't I see you at the concert yesterday?"
You: "Yeah, that was me up there!"
Person 1: "You were amazing! Great job!"