A CreepyPasta of average fame, Laughing Jack is what is known as a clown. He is, of course, murderous. His preferred method of killing is slicing open the stomach of said victim, removing the inards and stuffing the body with
candy. Before he kills his victim (usually a young
child), he becomes "imaginary friends" with them. Said
child is then comfortable with Laughing Jack coming into their room, and will suspect nothing when he murders them. In the original CreepyPasta introducing Laughing Jack, it is said that after the parent discoveres the
boy is murdered, they accidentally stab the
boy in the heart, in an attempt to stab Laughing Jack. When the authorities arrive, it looks
like the parent had murdered the
boy herself. The parent was charged with insanity and was sent to a mental institution. There is never an explanation for what happened to Laughing Jack, so we can only imagine that he is still at large.