This Hypnosis Screamer Will Paralyze You

"Not to be confused with This Hypnosis Scary Pop Up will PARALYZE you !!." This Hypnosis Screamer Will Paralyze You is a screamer video uploaded to YouTube on April 11th, 2010 by user VaultOfFear.

Video
The video starts off with a warning that some people may become unstable by the time the video's over. Then, a trippy view of black and white shapes zooming in and out with a strobe illusion are shown, along with a voice saying for you to relax. After 2:32, Pennywise the Clown from Stephen King's IT appears with the same scream sound effect used in the K-fee commercials.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=5EimEFSWb3c