The T-Rex Illusion.

You won't believe it until you get to the end of the video, but this cardboard Tyrannosaurus Rex doesn't actually turn its head to look at you -- it's an optical illusion. As if we needed another reason to have nightmares about being hunted down by nature's greatest monster.
(via brusspup/Tastefully Offensive)

Het is altijd weer verwonderlijk hoe je hersenen je voor de gek kunnen houden. Hier een leuke optische illusie, deze kartonnen Tyrannosaurus Rex.