Ghost Illusions in Clouds

Ghost Illusions in Clouds
A 30-second screamer that pretends to be an optical illusion video which shows a sad face hidden in a picture of clouds. It then shows a still picture of a cloud-filled sky. But at the end of the video, a grayscale and negative image of Regan pops up with the scream from What's Wrong? extra loud and repeated four times. After some seconds the text "You just got pranked by a screamer..." is displayed.

Link
NOTE: The following video contains a screamer.
 * youtube.com/watch?v=P7hUcbkcJAY