It's A Boy for Will Ferrell

People shares the exciting news that Will Ferrell and his wife Viveca Paulson greeted their new son, Mattias Ferrell, on Saturday. Mattias joins his older brother Magnus, who's 2. In his usual style, Ferrell had a funny exchange with Letterman about the baby's impending birth:

When asked if he knew the baby's gender, Ferrell, 39, responded: "You know, I don't know if I do," he said. "I've gotta check my BlackBerry."

He continued, "Well, we do know, but I forget if we're telling people. I told the Today show we weren't telling them. But it's a boy.

Asked by Letterman how Magnus was handling the idea of a little brother, Ferrell said, "He doesn't like it. He's in denial about it. ... I'm like, 'You better live it up now, cause No. 2 is coming and it's not going to be fun for you.'"

Photo from People.