Stop Copy catting me

I was driving home from Mom and Dads with Ryan and Sydney in the back seat.   Sydney was copy catting Ryan.  

It went something like this:

Ryan: Stop copy catting me.

Sydney: Stop copy catting me.

Ryan: Sydney, I'm serious.

Sydney: Sydney, I'm serious.

Ryan:  I'm an idiot.

Sydney:  You're an idiot.

Sydney is no dummy and Ryan knew he had lost the battle. He stopped while he was ahead.