Quote:
Originally Posted by biskoppen
This one is my all time favorite.. know by most people, but for those who don't know this one, square A and B are the exact same color - but your brain fucks it up and makes it looks like two completly different shades of gray.. fucking awesome 
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Seriously...this is known by MOST people?
MOST people don't know where the United States is on a globe dude!
