<DIV></DIV><P>Your baby’s first word will be . . .</P><P>“Dada!”</P><P>Right? </P><P>Everyone knows that fathers wage a secret campaign to ensure that their babies’ first word is “Dada!” </P><P>But how does it work?<P>One of the most popular entertainers in the world and NBC's <I>The Tonight Show</I> host, Jimmy Fallon, shows you how.