3 Ghosts

"3 Ghosts" is a YouTube screamer prank originally uploaded to the site on June 18, 2008. The video's maker is UserWasKilled.

Video
The video depicts a black-and-white image of a building staircase, with instructions to find three ghosts somewhere in the picture. Of course, there is no ghost to be found. After 14 seconds of looking, a demonic face from the movie Dead Birds will appear with shock sounds of a woman screaming. Then text shows up saying, "haha got you now clean you underware and get back to work".

Link
WARNING: The following video has a screamer.

youtube.com/watch?v=jPSRKnB-o0c