The Impossible Paper Illusion is a staple of the surprisingly vast canon of paper tricks. With scissors and paper as the only supplies, three strategically placed slits can make a trippy magic flap. The surprisingly lucid HowToLifeHacks420 posted a tutorial of the gimmick, and even though they still call the illusion "impossible," now you can see how it's done. (Although, you might have to watch it a few times to get it.)