Which one's the baby? Cristiano Ronaldo celebrates goal... by sucking his thumb as son watches on

By CHRIS JOHNSON This one's for you, son: Cristiano Ronaldo sucks his thumb after scoring a goal during his team Real Madrid's match against AJ Auxerre in Madrid on Wednesday It's not exactly the most conventional reaction after scoring a goal. But footballer Cristiano Ronaldo went a little gaga on the pitch after hitting the back of the net - by sucking his thumb as his young son watched on.The