NEW YORK — While Fall Out BoyFall Out Boy rocked "Total Finale Live" with a performance in the middle of New York's Times Square, the group's bassist, Pete Wentz, had the doubtless surreal experience of watching his band perform without him as he was with his very-pregnant-and-reportedly-in-labor wife, Ashlee Simpson. He called into the show to share the moment.

He assured everyone that the baby Wentz has not yet arrived. "Not here yet!" he said. "I went to Chinatown, picked up a bootleg version of 'Twilight' and watched it like, 72, times."

He joked that his bandmates, as well as the rest of the world, will probably know that the baby's arrived when the news hits the Internet. But he assured everyone, "Nothing's happened yet!" Wentz also shared with his fans that the couple have yet to pick out a name for the baby.

He was missed by his bandmates. "It was cool [to perform]," Fall Out Boy singer Patrick Stump said on the show. "I wish Pete was there."

Wentz's friend Joel Madden — who, you may have heard, has a daughter, Harlow, with girlfriend Nicole Richie — had some key advice on the rocker-as-father gig.

"When you're on tour you can be late a lot — but when you're a dad you can't be late," Madden said on the show. "A baby doesn't wait!"

Another baby not waiting for Wentz is the show he hosts, "FNMTV," which will be back for a second season in December. He admitted that hosting isn't as easy as he makes it look.

"It's hard asking people questions," he said. "I'm not good at reading the teleprompter. 'TRL' made me excited about countdowns!"

For everything on "Total Finale Live," including bonus performances, behind-the-scenes action and more, head to TRL.MTV.com. Plus, check out our stage-door interviews with 50 Cent, Taylor Swift, Ludacris and many more superstars at the big show.