Optical illusions in mind-boggling photos

Optical illusions in mind-boggling photos

People are using book covers to create strange optical illusions in a collection of bizarre photographs sweeping the web. The artworks are held up in front of the face, like a mask, or even over body parts to trick the brain into seeing something that isn't there.

A man sporting green hair has found the perfect mask in Batman nemesis the Joker.

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