There is some fishing line that is being pulled up at a steady pace, you can see the whole spiral quiver as it's being reeled up. Come on people, with all the awesome things in this world, please don't be so amazed with simple child's tricks.
Not to be the annoying guest... But the 'Cobra Effect' is actually used to describe a situation that is made worse by an attempted solution. The term originated when the British Empire tried to clear all the cobras out of one of their colonies by paying the locals for every cobra they brought in dead. The natives decided to breed cobras, kill them, and bring them in to the British. The British ended up with more cobras than when they started.
"Are you recording???"
"Yeah"
*does it
"Oops, wait nope, I wasn't recording"