My halloween costume

My halloween costume is a screamer video uploaded to YouTube along on Halloween October 31st, 2013 made by Cyriak.

Video
The video shows a man (But the creator known as himself) turns around and staring at the viewer. but after at 5 seconds mark, a deformed face with hands, 1 eye and a mouth suddenly pops up along with a low pitched demonic scream, the face changes back to normal.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=4poDtn73-h4