World's Best Illusion

"World's Best Illusion" is a screamer video uploaded to YouTube in July of 2007. The maker is user mandel94.

The Video
We are shown a trippy artistic image quite similar in appearance to a flower as instructions tell you to stare at the shape, until too late it reveals it's a screamer. Instead of anything scary, a normal bespectacled man appears with funny high-pitched sounds. However, after the credits, the picture from What's Wrong? will appear with a high pitched scream.

Link
https://www.youtube.com/watch?v=-SyfBQpcORI&list=PL06980FCCD02C2A36&index=5