Justin Timberlake Shares New Pics of Himself and Jessica Biel With Silas

Regarding fatherhood, Jimmy said, "It's the great thing in the world, right?"
Justin quipped, "I still have trouble wiping my own ass!" All jokes aside, the "Cry Me a River" singer told the late-night host, "It is the most insanely, amazing, most beautiful, unbelievable thing that could ever happen to you."

Justin also revealed that Silas' first word was "da-da."
Aw! So cute