Perhaps also hacking into Notch’s email and Twitter to reply on his own existence.
Herobrine shows a lot of characteristics of being a form of virus, such as manipulating game worlds, deleting threads and sending messages through the Minecraft Forums. Other versions say you must kill yourself in the fire before Herobrine will appear. In most accounts, this is the end of the ritual. Place the redstone torches on the four side gold blocks (not the corners), then light the netherrack on fire. This kind of laugh might be good if you were trying to channel a witch or other mischievous spirit. Try shooting for the highest pitch you can make with your voice and sliding down into your normal range, laughing all the way. A high pitched evil laugh comes off as crazed and hysterical.