India, July 31 -- A viral optical illusion image that has recently been making rounds on the internet has left people confused. At first glance, the image looks like an angry man. But when the picture is turned upside down, it turns into a photo of a cheerful soldier. The image has been shared across various puzzle pages and optical illusion social media pages, leaving netizens surprised by how a simple cartoon can trick their minds.

The trick works because of how the brain reads things fast. Our brains are always trying to figure stuff out quickly, especially faces. So when it sees shadows or shapes that look like a face, it just fills in the rest, even if it is wrong. That is why this picture looks odd at first.

But once it is flipped...