"I hope I don't have any problems where the diaper falls off and the baby [poops] on the ground," he added.
Even though he's nervous about it, the Magic Mike star says he'll do it. "I'll definitely do the diaper changing," he said. "If it means touching the [poop] and getting peed on, I'll still do it. I'm up for the challenge."
And, just to make us all swoon-y, Channing said he's pampering his wife, Jenna Dewan-Tatum, 32, like crazy. "I'm doing anything that she asks for," he said, including "a thousand foot rubs." Lucky lady!
He's too adorable. For more of the interview, check out People.com