http://www.brainboggling.com Free online mind games, puzzles, flash games, arcade games and more! Thu, 17 Sep 2009 09:10:18 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 http://www.brainboggling.com/2008/rickroll-optical-illusion/ http://www.brainboggling.com/2008/rickroll-optical-illusion/#comments Sun, 30 Mar 2008 02:23:14 +0000 admin http://www.brainboggling.com/2008/rickroll-optical-illusion/ The famous internet phenomenon Rick Astley and the rickroll prank has now become an optical illusion. Look at the black and white abstract picture below and stare at the plus sign in the middle of the picture for 30 seconds or longer. After 30 seconds look away and blink fast repeatedly.

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