Cooper likes to stick his finger in his belly button. He has been doing this as long as I can remember and it is hereditary apparently, because Drew's nephews do it too! And yes, that is Cooper drinking a bottle and no it is not milk. We were out of juice..so it is crystal lite. (I may have just revealed too much about my parenting skills) I am hoping he'll give it up when we have our next baby. Maybe he'll decide he wants to be a big boy then, who knows.