Woah: Here is an optical illusion I animated. If you have trouble seeing it, try watching one bouncing box at a time.

http://gfycat.com/FancyShockedDogwoodclubgall via /r/woahdude http://www.reddit.com/r/woahdude/comments/3g9qc4/here_is_an_optical_illusion_i_animated_if_you/