Rence and Mario from Netherlands have been using this skull pillow for few months, until they noticed there’s an illusion in it. Can you spot the illusion yourself, before reading the explanation? At least give it a try… Here’s what Mario said: “This is our pillow. We’d been sleeping on it for half a year until we noticed that the picture of a skull is actually two alchemists!!! Hopefully you’ll place our picture on the site!” Similar illusion can be seen in Aerosmith’s new album cover.