Cool Optical Illusion Collection #4

Crazy Optical Illusion

Looking for a crazy optical illusion... this is sure one of the craziest we've seen. Totally straight lines, but it sure looks like this wacky checkerboard is bulging right off the screen. If you don't believe it, just hold a peice of paper up to test the straightness of all the lines.

And, if you're truly up for a challenge. Count how many squares there are. Otherwise, you know what to do!