By Matt Hladik Training camp isn’t just the time to work on plays for the upcoming season, It can also be the place to have some fun. Patrick Mahomes was filmed doing a little bit of both during a drill this weekend. The exercise called for Mahomes to execute a handoff from shotgun or pistol formation, then catch a toss from a coach and throw a pass. During one rep, Mahomes threw the ball behind his back, which got some people talking about his incredible talent, and others wondering if this is something he’d ever try in a game. Check it out: Mahomes and Kansas City head coach Andy Reid love b…