What you are about to see is going to freak you out a little and I really do have no idea how and why it works. I just know it does work and is a real head f*&k.
So basically what you need to do is state at the cross in the middle of the image below while you watch the faces out of the corner of your eye. As the faces start to change, you will see they start to look strange. They then get even more strange until these famous faces of celebes we all know an love turn into zombies.
Don’t blame me if it gives you sleepless nights. We did warn you.