"Magic beans" often refer to the fictional beans from the fairy tale "Jack and the Beanstalk". In the story, Jack trades his cow for a handful of these beans, which grow into a giant beanstalk reaching into the sky. The beanstalk leads to a land inhabited by a giant, where Jack finds treasures and adventures. In a broader context, "magic beans" can symbolize unexpected opportunities or potential. They represent the idea that something small and seemingly insignificant can lead to great rewards or changes, much like how Jack's beans transformed his life.