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Michael Phelps introduces baby son Boomer in Facebook live chat

Michael Phelps introduced his baby son Boomer and talked about changing his first diaper in a Facebook live chat.
/ Source: TODAY

Welcome to the world, Boomer!

Olympic swimming legend Michael Phelps introduced "the little dude," his newborn son, Boomer, in a live Facebook chat on Sunday.

The 18-time gold medalist was taking questions along with fiancee Nicole Johnson and friend Allison Schmitt as they drove to the airport.

RELATED: Michael Phelps talks Rio, rehab and retirement with TODAY's Matt Lauer

He provided a quick glimpse on camera of a sleeping Boomer, who was born on May 5.

"I changed my first diaper today," Phelps said. "The photos that (the doula) showed me of what diapers could look like freaked me out, not gonna lie. I was afraid to change a diaper at first, and today I was like, 'I'm gonna do it. I'm gonna have that experience before we leave.'"

Johnson jokingly called Phelps' first diaper change "a milestone."

Phelps added that Boomer has given him "a new definition of love."

Follow writer Scott Stump on Twitter.