Flex is Crazy Cool By Brooklyn BasedMar. 28, 2012 | Updated Jul. 12, 2013 at 12:10 pm FLEX IS KINGS TRAILER from Flex Is Kings on Vimeo. I’m not even going to bother to try to explain what happens in this video because why use words when you can just watch pure awesome. Check out their Kickstarter campaign, because Jesus god, I want to see a whole movie of these kids dancing.