United Kingdom, May 1 -- Brenda Song and Macaulay Culkin's children had a hilarious reaction to seeing their mother in Wendy Wu: Homecoming Warrior.

The 38-year-old star, who has sons Dakota, five, and Carson, three, with the Home Alone actor, has revealed her kids' reaction to seeing her in the 2006 Disney Channel kung-fu fantasy action movie, and admitted they didn't quite "understand" that she was playing a role.

She told the Not Gonna Lie podcast: "Mac has-behind my back-shown them things that I've been in. Our oldest was really into like superheroes and like Ninja Turtles...

"and Mac showed them [Wendy Wu: Homecoming Warrior]. And my son, because they're so used to watching videos of themselves, and like digital age, they're so co...