Creepy Grudge Ghost Girl in the Mirror
Creepy Grudge Ghost Girl in the Mirror is a classic YouTube screamer. This video was uploaded in 2008 and has since accumulated more than 108 million views so far as of 2017.
It starts by showing a young girl who is putting on her earrings. After she put them on, she looks away and waves to the camera. After that, the camera zooms in on the mirror and the young girl's reflection becomes a demonic face, eyes and mouth wide open, screaming at the camera, while the girl is still waving at the cameraman.
NOTE: The following video contains a screamer.