Were you staring at that photoshopped cover of Kate Upton on Sports Illustrated and did you have a Bill O’Reily moment where you wondered how this chick made it to the cover anyway? Well, I’m here to help. Rather, I’m here with a video that will help explain everything. From why Kate Upton is popular to why she made the cover of SI to why you see her jumping up and down in movies all the time. The video, made by the WorldWideInterweb, is called “Kate Upton Bouncing: The Supercut” and if you couldn’t tell from the title, it’s a documentary about how Kate has become the premiere titty manipulator of our time. Check it out after the jump.