The Main Joke of the Century

Главный прикол века (Translated to: "The main joke of the century") is a screamer created and uploaded onto YouTube by a user nu Kirhtthenn on November 2014.

The video contains a crudely quality footage depicting a door, After approximately 50 seconds into the video, at which point the same screamer from SCP-450 abruptly interrupts the footage, it is unknown if this video is related to its title.

Link
NOTE : the following video contains a screamer!
 * youtube.com/watch?v=L7wIpXfRMMY