Left handed/ Right Handed

This one is for Uncle Ryan who gave me stats about the value of being ambidextrous (you know, for when JPA becomes a rich and famous athlete). He encouraged us to work on this with Jonathan.
Well, it seems that Jon sees the value in it, too. This summer he tried to eat his cereal with his left hand and continually got frustrated when he couldn't do it! Hilarious!
The other day he tried to write on his magna-doodle with his left hand. He had a conversation with his hands.
To his left hand, "I write with this hand."
To his right hand, "This hand doesn't help."
He started writing with the left and had difficulty and then his right hand moved over to help out.
"No, this hand do it by itself!" he scolded his right hand, while holding up his left.
Where does he come up with this stuff????