Boo the little tiger with a twist

Boo the little tiger with a twist is a screamer video uploaded to YouTube by user April Fowler Dewey on November 11, 2016.

The video shows the regular Tiger Boo Song. however, after 15 seconds, the same screamer from SCP-450 pops up.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=hEvOuWlDih4