Strong video hypnosis is the most horrible screamer
From Screamer Wiki
Сильный видео гипноз самый ужасный скример is a Russian screamer prank. It's very similar to the hypnosis screamers, where it places a spinning, blinding object in front of you for the first chunk. After 0:58, a flurry of screamer pictures appear with a loud, piercing scream.
Link
NOTE: The following video contains a screamer.
- youtube.com/watch?v=00dzYcBQJ10