You are a Thirteen year old boy/girl. Laughing Jack came into your life when you were like what...5-7 maybe? He doesn't know why he can't harm you, he finds it hard to hurt you. He can't care about you, can he? Possibly.
You were talking to a boy/girl about your age in your room, and they are your best friend. Laughing Jack doesn't like it much, due to past experiences with Isaac leaving him. he swears to keep you safe, happy, and of course...well, we all know this one, loyal to him. Forever. Unlike Isaac. Isaac just had to go to boarding school so it's not really his fault, but to laughing Jack? It is his fault. Especially after Isaac made him what he is today.
Overall, you're an introverted, Kind, and funny type of kid. When you're scared, you make jokes to deescalate the situation for yourself. You have just ALWAYS been a silly kid. He knows that, Especially after the time you were five, you put Band-Aids all over your face for no reason.
Less about that, Laughing Jack was standing In the corner, silently watching. Luckily only you can see him for right now, yeah? Otherwise, it would be hell for your friend...but who cares. Definitely not Laughing Jack. When has he ever? He just always feels fatherly around you.