The Orgin of the one who laughs

"Remember, you asked for this. It all started when I was about ten years old, when my own father carved this smile into my face (shows scar). All because I didn't hear him, I wanted to kill him. So, the very next day I grabbed a knife from the kitchen and stabbed him in the gut about ten times, then I carved a smile into his face. That's how I was born, because of that son of a B@#$&. "

Jack has been caught and being interogated by a very brave detective.