Visual Illusion: Snakes on a Plane

Enough is enough. I've had it with these ****** illusory snakes on this ******-****** plane.

Snakes appear to move. pic.twitter.com/HggajNQsHY

— Akiyoshi Kitaoka (@AkiyoshiKitaoka) March 17, 2018

(Tip of the cap to Maggie Koerth-Baker.)