"Two Babies..."

The past two weeks Jack has been telling stories. They usually begin, "Two babies..." Then he makes up a terrible and naughty thing they did. Usually they, "Get into my toys and mess them up." Or they, "Open my drawers and rip all my clothes." Or they, "Draw on my lunch box." Or they, "Break my toys." Those "Two Babies," are always up to something. Nick calls them the Ninja Babies, because none of us have seen them! But, I think Nick mostly wants to hear Jack going around, talking about Ninja Babies!