Left Brain, Right Brain: Say the color, not the word.

Illusory Motion: Focus on the dot in the center and move your head back and forth.

Black or White: Count the black dots.

Center Circles: Is the left center circle bigger? (Hint: No.)

Elephant Legs: How many legs does this elephant have?

Staring At The Black Dot: After a while, the haze around it will appear to shrink.

Horizontal Lines: Are the horizontal lines parallel, or do they slope?