Stashed in: Best Videos, Flexible!, Mother of God!
The contorting kicks in at 2:25. At 3:00 it gets crazy. Wow that's flexible!
Mind Blowing Ambiguous Cylinder Rectangle Illusion by Kokichi Sugihara
Parkour, Cops, and Donuts - 4k Ultra HD video
Neil deGrasse Tyson and Neil Gaiman on the Secret of Genius | Brain Pickings
Three of the Best Muppets Lip Sync to the Beastie Boys