Try to say the color and not the word.
Here is another one that will make your eyes fall out of your head.
Another illusion to make your eyes bug out of your head. The square moves!
Stare at the center long enough and the dots will disappear!
Here is a mind trick. Count the legs on the elephant.
The square in the middle appears to be curved but its perfectly straight.
I bet you get this one wrong!
Once again, these lines are straight as an arrow.
Is this a perfect square or not. We think it is.
Warning, Your eyes may bug out of your head while you look at this one.