You might get a seizure if you watch Ian Eastwood dance too much in this video, but it’s so damn cool that it might even be worth it. It’s neat because he blends the view of him dancing while he’s facing us with another view of him dancing with his back turned. The two opposing views are spliced together and he’s doing the same impeccable dance in each—which basically makes you feel like you’re doing drugs, because you don’t know exactly which angle of him you’re watching.
Some of these optical illusions from Quirkology are totally silly but there are others that are genuinely fun to do, especially to kids and/or drunk people. It’s like explaining how to perform magic tricks or also how to exploit the weakness that is the human eyeball.