Boo the little tiger with a twist

Boo the little tiger with a twist is a screamer video uploaded by YouTube user April Fowler Dewey on Nov 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