Mentos + Yakult

Mentos + Yakult
Mentos + Yakult is a YouTube video uploaded by zbirnadnia on November 14th, 2011. As of July 2015, the video has accumulated over 7 million views. The video starts by showing a pack of Mentos and a bottle of Yakult. Then, the person opens the bottle and the pack and drops the Mentos inside the bottle of Yakult. About five seconds later, Regan from The Exorcist appears with a scream.

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