New dad John Stamos gushes over his 'beautiful little boy': 'Everything is more exciting' (Exclusive)

Uncle Jesse is now a father -- and he's cherishing every moment!

ET's Lauren Zima caught up with new dad John Stamos just days after his wife, Caitlin McHugh, gave birth to their first child, Billy, on April 10.

The 54-year-old actor showed up to WE Day at the Forum in Los Angeles, California, on Thursday, and when asked how fatherhood was treating him, Stamos mused, "I'm good. I'm a little tired. I think I've got a little poop on this suit."

Stamos then shared with ET a sweet moment that he recently had with his newborn son. "I woke up this morning and I sang him 'House at Pooh Corner,' the Christopher Robin [song]," he recalled. "I started crying. It was great."

See photos of John Stamos and Caitlin McHugh together:

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John Stamos and Catilin McHugh together
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John Stamos and Catilin McHugh together
SAN DIEGO, CA - JULY 22: Caitlin McHugh and John Stamos attend the Comic-Con International 2016 - 20th Century Fox Party at Andaz Hotel on July 22, 2016 in San Diego, California. (Photo by Todd Williamson/Getty Images)
SAN DIEGO, CA - JULY 22: Caitlin McHugh, John Stamos, Darren Criss and Mia Swier attend the Comic-Con International 2016 - 20th Century Fox Party at Andaz Hotel on July 22, 2016 in San Diego, California. (Photo by Todd Williamson/Getty Images)
DANA POINT, CA - NOVEMBER 05: (L-R) Bob Rehling, Janeen Stamos Rehling, Alaina Stamos Talarico, John Stamos, Caitlin McHugh and Frank Talarico attend the Goodwill of Orange County Gala at Ritz-Carlton Laguna Nigel on November 5, 2016 in Dana Point, California. (Photo by Tara Ziemba/Getty Images)
BEVERLY HILLS, CA - NOVEMBER 14: Actors Caitlin McHugh (L) and John Stamos attend Saban Community Clinic's 40th Annual Dinner Gala at The Beverly Hilton Hotel on November 14, 2016 in Beverly Hills, California. (Photo by Rodin Eckenroth/Getty Images)
BEVERLY HILLS, CA - NOVEMBER 14: Netflix Chief Content Officer Ted Sarandos, Actress Caitlin McHugh and Actor John Stamos arrive for the Saban Community Clinic's 40th Annual Dinner Gala at The Beverly Hilton Hotel on November 14, 2016 in Beverly Hills, California. (Photo by Greg Doherty/Getty Images)
LOS ANGELES, CA - DECEMBER 07: John Stamos is seen with his girlfriend Caitlin McHugh on December 07, 2016 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
LOS ANGELES, CA - MARCH 11: Actor John Stamos (L) and Caitlin McHugh at Nickelodeon's 2017 Kids' Choice Awards at USC Galen Center on March 11, 2017 in Los Angeles, California. (Photo by Chris Polk/KCA2017/Getty Images for Nickelodeon)
LOS ANGELES, CA - MARCH 11: Actors John Stamos (R) and Caitlin McHugh arrive at the Nickelodeon's 2017 Kids' Choice Awards at USC Galen Center on March 11, 2017 in Los Angeles, California. (Photo by Jeffrey Mayer/WireImage)
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The Fuller House star also praised his wife for how she handled the delivery. "My wife was so beautiful and so graceful through it all, like she does life. I mean, she just kind of breezed through," he said of McHugh's labor. "I hate to tell women, but she did it in about 20 minutes. It happens so fast and then they were like, 'Take pictures! Grab her leg!' And then it was over, but it was just beautiful."

As for whether Billy has inherited Stamos' great head of hair, the proud father quipped, "He has pretty good hair. I'm pretty impressed."

Continuing to brag about the new addition to his family, Stamos added, "It's more beautiful than I imagined. Everything is more colorful, more exciting. Music, you know, sounds better. He's just a beautiful little boy."

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