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 view the black point in a negative image of a landscape. The landscape suddenly turns black and white. After 32 seconds, a low-contrast, continuous loop video is shown in which a boy screams into the camera with the creators scream starts playing, which can already be said that the concept of his screaming is wrong in each case.

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