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Knowledge Cats Dirty Minds
Food Ambiguous Camouflage and Mimicry

Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Bezold effect fabric

Bezold Effect

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

Parallax effect

Parallax Effect

Exxxtra leg

dirty mind illusion with an exxxtra leg
Credit: melossta

At first glance you may think this guys penis is hanging out of his shorts, but if your vision is alright, you can see it is an exxxtra leg, belonging to someone standing behind the guy.

More optical illusions:

Firefall
Giant Broccoli
Blueberries
Screaming up or down?
Misaligned Arrow
Flying through the woods
World's Worst Carpet
Flying Cargo Ship
  • Pareidolia
  • Physical illusions
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sword-billed hummingbird

Sword-billed Hummingbird

Birds

hills with trees

Hills and trees

Food