"I've never been so excited when something poos," Tatum said with a smile. "I just get so amped up because I'm in the game now. The mom does so much of the early work those first few weeks, and I'm just like, 'Put me in the game. Put me in the game.' I've gotten so good at like changing diapers, swaddling and then get it back before she cries."
Meanwhile, White House Down hits theaters on Friday.