I'm the Champion

While giving instructions for an activity with the 5th graders I said, "when you're done with your paper, hold it in the air so I'll know you're a champion."  The first kid who finished declared, "I'm the champion!" while putting their paper in the air.  The next kid to finish said, "Say I'm a champion, Ms B!" What followed was every kid in the class getting told "You're the champion!" as soon as they finished their assignment.  It was pretty great.