Please don't lose your lunch after staring at this. But it's weird and glorious all at the same time.

IF YOU FEEL QUEEZY SCROLL DOWN OR PRESS THE CALL BUTTON AND A FLIGHT ATTENDANT WILL BE WITH YOU SHORTLY.

It's called "The Purple Nurple Optical Illusion." You can see more of designer Walter Anthony's optical illusions here. This is the explanation we found with it.

"Anomalous Motion Optical Illusion aka Peripheral Drift Optical Illusion is characterized by anomalous motion that can be observed in peripheral vision. […]

Keep in mind that this is a static image. It is not animated in any way. but as your vision moves back and forth the center area seems to be moving toward the center (contracting) and the outer edges seem to be moving away (expanding) from the center. Also worth noting is that if you fixate on a point in the center and don’t move your eyes this anomalous motion will stop.

We don't believe it for a minute...