Horizontal Circles Eye Trick Illusion

Here's what to do for this Optical Illusion in above Picture:

Check out these circles. After you've been looking at the picture for awhile, you'll star to think that the circles lines are actually pointing down, and are not parallel to the edges of the picture.

There's also another optical illusion going on in this picture. There really aren't any lines for the circles, it's just your eyes following the pattern.