Two high school freshmen pitch a tasty way to improve the ice cream cone; an entrepreneur presents a reinvented kid stroller with an athletic twist; a woman hopes to make the lives of parents easier with her line of child products; and a magician duo performs a music-magic entertainment spectacle, but will the Sharks see through the illusion? Also, an update on Gameday Couture, the fashionable women's gameday apparel, which Mark Cuban invested in during Season 6. (thetvdb.com)