This is cute.  You know how little kids like it when you mimic whatever they do?  Like if they point and you point back?  They get a kick out of it because they think they're controlling you somehow.

Well, there's a video making the rounds of a 15-month-old kid at a summer camp in North Carolina.  And every time he claps or throws his hands in the air, a group of 500 PEOPLE copy him.