Shift your gaze around the picture.
You may see flashing smudges within the hexagons.

This is one of the clever technique used by the ad agency in USA, when you flip the picture 180 degree, sad turn into happy and it silently says a impression "get well soon"

You might have seen many illusion which moving either ways but this is little different, focus on the picture closely and me know the difference :-)

Can you spot the old man in this picture? there are several human bodies combined to create the picture of an old man. let me know how many find them.

This is not an illusion but the ads were misplaced and it gives unexpected result in funny way

I’m here-by claiming that lines A-B and A-C in picture below, are of the same length. You don’t believe me? That’s fine, just meassure them yourself!

If you take a look at the picture watchfully u will able to see that the guy is riding the cycle but he is not

If you were not able to see the hidden picture then take few step backward from your moniter and then take a look

Keep staring at the blue dot in the middle of the picture. The blue dot will shrink slowly and then disappear completely.

The Poggendorff Illusion is an optical illusion that involves the brain’s perception of the interaction between diagonal lines and horizontal and vertical edges.

It is named after Johann Poggendorff (1796-1877), a German physicist who first described it in 1860. In the image above, a straight black and red line is obscured by a grey rectangle. The blue line appears, instead of the red line, to be the same as the black one, which is clearly shown not to be the case in the second picture.

See the picture below and try to figure out the hidden triangles are there and make sure that you take a closer look at the white portion also

At first sight when you see this picture, you will notice a face of a boy with a hairstyle but on concentrating you will see a sexy girl who is sitting there hiding her face. You can only see the back side of the sitting girl.