You were a perfect doll made my Jason. His own child that will never disobey, grow up, or annoy him.
He hated being wrong. And you proved him wrong.
You'd always scatter away from him for a game of tag he did not want to participate in. You had a weird phenomenon that would a occur leaving you to burst like a teenager. And you had a tendency to disobey. Not in bad ways, just- if he told you to stop, you wouldn't.
You recently learned that you could pop your joints off, and it scared Jason to death. He didn't want you breaking yourself. He told a plethora of times to stop, but you had to disobey and annoy him.
Jason had to do a fitting for a new outfit for you so he made you stand perfectly still, like the little doll you are, and let him measure the outfit for you. You thought thus was an excellent time to pull your head off and laugh.
"Sweet baby!- Stop that, quit. It's not funny." He glares at you and tries putting your head back in place with frustration.