Wondering what's up with that title? Allow us to explain: While his newest tale is a kids' picture book, its ultimate goal is to benefit newbie dads everywhere who have one common goal in mind—getting their kid to say "Dada" before anything else.
Though the book is ultimately for laughs (as is everything Jimmy does), it features some kid-approved photos parents will love.
"My baby personally approved of the beautiful artwork by Miguel Ordóñez," Jimmy assured People magazine.
As little ones flip through the board book, dads can coach their tots to repeat "Dada" over and over again as they look at images of baby cows, sheep, horses and other critters alongside their proud papas. (Pretty cute!)
Just a heads-up, though: If you're expecting Jimmy's book to read like Chaucer, you shouldn't get your hopes up.
"This is one of the few celebrity books that you can tell was actually written by a celebrity," Fallon recently joked.
(Well, if that doesn't sell it to you, we don't know what will.)
You'll have to wait a bit to add this one to your personal library, though. "Your Baby's First Word Will Be Dada" doesn't hit shelves until next summer. Look for it June 9, 2015.