Tony likes to do his own thing

Jenny went to see Tony do something at his kindergarten today.  As far as I can make out, from her report to me about it, the kids were doing some sort of outdoors sports show.  

I really don't care what the kids were doing, but I was interested in how Tony behaved.  Jenny said that Tony wasn't acting according to the program and was doing his own thing.  But that is to be expected since he is the youngest in the class.

Youngest though he is in the class, Tony is the biggest kid.  Jenny says he is a giant in his class.