An Optical Illusion (Not from Stareclips.com)

An optical illusion (not from stareclips.com) is a screamer video made by a YouTube user hotogainc on April 21, 2007.

The video invites the player to take a look at the black dot in a negative image of a landscape. The landscape suddenly turns black and white. At 32 seconds, a continuously looped bad contrast video of a boy yelling at the camera is shown with the creator's scream, which you can already tell, the concept of its screamer is poorly made respectively.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=IiGda5Q9eGQ