Sammy cry for Daddy

I discovered on our ride home from VBS that Sammy has learned to cry on demand... Zack was in the backseat saying Sammy cry for Momma... and Sammy would start to whine and poke out his lip and whimper... funny thing I've heard that "cry " now a few times. It's seemed to work quite well for him in the past.
Once T came in from work, I surprised him with a "Sammy, cry for Daddy"
He looked right up to T and squinted his eyes and gave his a nice cry... Boy do we have our hands full!