Your Baby's First Word Will Be DADA

#1 New York Times Bestseller!

Your baby's first word will be . . .

"Dada!"

Right?

Everyone knows that fathers wage a secret campaign to ensure that their babies' first word is "Dada!"

But how does it work?

One of the most popular entertainers in the world and NBC's The Tonight Show host, Jimmy Fallon, shows you how.