Matt Damon: Stealing Diamonds, Changing Diapers

"Ocean's 13," which hits theaters Friday, reunites Hollywood's latest Rat Pack: George Clooney, Brad Pitt and Matt Damon.

While the cast may conjure up images of Frank, Deano and Sammy, as Matt Damon told ABC's Chris Cuomo, these guys spend more time talking about diapers than dames.

The word is that the first "Ocean's" was made for the audience, the second for the actors and what they wanted, and the third, for both. Damon said that's pretty much right.

"I think we really wanted to go out on a high note, and I think Steven [Soderbergh] -- it was really Steven's idea to do this one, which you know, when an A-list director says, 'Hey, guys, I know how to do this,' you sign up right away," Damon said.

For the actor, being able to work with some of his best buds is icing on the cake.

"Making movies is the most fun. It's just a great job, and to actually be able to do it with friends, it's such a win. … It's really a no-brainer," he said.

In the movie, Damon goes after Ellen Barkin in an effort to capture a load of diamonds.

"Now normally in that situation, we'd send in Pitt, you know, Rusty," Damon said. "But I feel like I'm ready to kind of be promoted within the gang."

Changing Diapers On the Set

As Damon's "Ocean's" character has evolved, so too has the man. With a wife and a 1-year-old daughter, Damon is at a different point in life now than when "Ocean's 11" came out in 2001, as are some of his cast members. That can make for interesting off-screen conversation.

"There are a ton of kids now. I'm a dad and you know, Brad obviously has got four kids," Damon said. "We're a very different group than we were seven years ago, when we started making these."

"On the, the first week of shooting, we ran out of diapers and we had the baby in the trailer and I just asked Brad if he had a No. 1, because the kids were really small and our kids are really close in age," he said. "And George overheard and he said, 'Now, I have no idea what you two are talking about,' because that's a perfect example of the kind of thing you only know if you have kids. What the hell is a No 1? … And Brad pulled one out and said, 'This is what it looks like.' … And George said, 'Oh, well, you know, those are smaller than the ones I wear.'"

He'll make jokes about diapers, but Damon said he didn't hesitate to change them. He relishes his role as dad as much as his "Ocean's" role as debonair con man.

"A lot of guys won't change diapers. I never really considered not changing them," he said. "There's nothing that feels wrong or weird or crazy about it to me."