In an episode of The Ellen DeGeneres Show airing Monday, Kutcher, 39, recalls how he and Kunis were driving one day when she looked at him and said, "I think Donald Trump is going to become the president and I think our baby's name is Dimitri."
"She predicted it. She called it, it's not even a joke," he adds in the episode teaser. "That's just what it is. Everything she says is right."
Kutcher also revealed that the couple's 2-year-old daughter Wyatt thinks Dimitri is her baby. "She loves this baby, maybe more than me. It's like borderline," he jokes.
"At some point I'm going to have to explain to her that he's not really her baby, and I don't know how I'm going to do that," the actor says with a laugh. Dimitri, however, isn't so sure of his overly-affectionate big sister. "He's like Kung Fu Panda every time she gets close to him," he says.
Later in the episode, DeGeneres brings Kutcher's The Ranch costar and fellow That '70s Show alum Danny Masterson in for a hilarious game of Heads Up! The catch is, in honor of their upcoming movie, both actors have to wear giant inflatable cow suits as they act out the clues.
Watch it in the video above.