Here's an optical illusion that will mess with your brain. It mainly hurt my brain and made my eyes water a little bit.
This picture is going viral and it looks like a bunch of random color blobs basically. But if you stare at it for a little while . . . it kind of DISAPPEARS.
It's because of something called the Troxler Effect. When you stare at something long enough, it causes your eyes to adjust and makes some parts fade out of your vision. And the way this picture is designed, it makes the colors fade.