The Hypnotic Experiment

The Hypnotic Experiment is a screamer video uploaded to YouTube by user VenerableDread on November 11th, 2006. The video starts with an instruction, informing them to look at the center of the spiral and listen to the voice at high volume to get it work right, it then displays a moving spiral, but not long after once the video reaches 35 seconds, a picture of an eye appears along with a loud scream, then it displays the following message: "Did i scare you? If so, you are pranked, AGAIN! MWAHAHAHAHA".

Link
NOTE : the following video contains a screamer!
 * youtube.com/watch?v=QKz1v2en1lI